feat(admission): add group VPN exceptions

README.md

@@ -77,11 +77,11 @@ The token is displayed once and stored only as a SHA-256 hash.
 - PostgreSQL and Drizzle ORM
 - Keycloak OIDC for admin access with the `minecraft-account-manager-admin` role
 - Admin user search, account management, event exploration, DAU and confirmed-connection metrics, toggleable Natural Earth/OpenStreetMap user-location views, and automatic Discord nickname synchronization
-- Exclusive group admission: unassigned users fall back to protected `everyone`, and only the effective group's access setting applies
+- Exclusive group admission: unassigned users fall back to protected `everyone`, and only the effective group's access and VPN/proxy/Tor exception settings apply
 - Deployment-managed Discord guild ID and invite URL
 - discord.js bot with `/register` and `/account`
 - Java Edition online-mode accounts only
 - Velocity admission checks are fail closed
-- ProxyCheck.io geolocation and VPN/proxy/Tor detection with a 48-hour PostgreSQL cache
+- ProxyCheck.io geolocation and VPN/proxy/Tor detection with a 48-hour PostgreSQL cache and group-scoped game-connection exceptions
 
 See [`docs/architecture.md`](docs/architecture.md) for trust boundaries and service responsibilities, [`docs/api-errors.md`](docs/api-errors.md) for the RFC 9457 API error contract, and [`docs/security-review.md`](docs/security-review.md) for implemented controls and production requirements, and [`docs/accessibility.md`](docs/accessibility.md) for the WCAG-oriented interface review.

apps/web/src/app/account/page.tsx

@@ -63,7 +63,7 @@ export default async function AccountPage({
       .orderBy(desc(ipObservations.observedAt))
       .limit(100),
     discordIdentity(user),
-    db.select({ id: groups.id, name: groups.name, accessEnabled: groups.accessEnabled, isDefault: groups.isDefault })
+    db.select({ id: groups.id, name: groups.name, accessEnabled: groups.accessEnabled, anonymizedNetworksAllowed: groups.anonymizedNetworksAllowed, isDefault: groups.isDefault })
       .from(groups)
       .leftJoin(userGroupMemberships, eq(userGroupMemberships.groupId, groups.id))
       .where(or(eq(groups.isDefault, true), eq(userGroupMemberships.userId, user.id)))
@@ -192,8 +192,8 @@ export default async function AccountPage({
             </form>
             <section className="mt-8 border border-line bg-panel p-6">
               <p className="font-mono text-[10px] font-bold uppercase tracking-widest text-muted">Access groups</p>
-              {effectiveGroup ? <div className="mt-4 flex items-center justify-between gap-3"><span className="font-mono text-xs font-bold">{effectiveGroup.name}{effectiveGroup.isDefault ? " · default" : ""}</span><span className={`px-2 py-1 font-mono text-[9px] font-bold uppercase ${effectiveGroup.accessEnabled ? "bg-signal text-ink" : "bg-accent text-canvas"}`}>{effectiveGroup.accessEnabled ? "Access on" : "Access off"}</span></div> : <p className="mt-4 text-sm text-accent">No default access group is configured.</p>}
+              {effectiveGroup ? <div className="mt-4 flex flex-wrap items-center justify-between gap-3"><span className="font-mono text-xs font-bold">{effectiveGroup.name}{effectiveGroup.isDefault ? " · default" : ""}</span><div className="flex gap-2"><span className={`px-2 py-1 font-mono text-[9px] font-bold uppercase ${effectiveGroup.accessEnabled ? "bg-signal text-ink" : "bg-accent text-canvas"}`}>{effectiveGroup.accessEnabled ? "Access on" : "Access off"}</span><span className="border border-line px-2 py-1 font-mono text-[9px] font-bold uppercase">VPN {effectiveGroup.anonymizedNetworksAllowed ? "allowed" : "denied"}</span></div></div> : <p className="mt-4 text-sm text-accent">No default access group is configured.</p>}
-              <p className="mt-4 text-xs leading-5 text-muted">Your effective group alone determines Minecraft access.</p>
+              <p className="mt-4 text-xs leading-5 text-muted">Your effective group alone determines Minecraft and VPN/proxy/Tor access.</p>
             </section>
           </aside>
         </div>

apps/web/src/app/admin/(console)/actions.ts

@@ -1,31 +1,43 @@
 "use server";
 
-import { appSettings } from "@minecraft-account-manager/database";
+import { randomUUID } from "node:crypto";
+import { appSettings, events } from "@minecraft-account-manager/database";
+import { getClientIp } from "@minecraft-account-manager/network";
+import { eq } from "drizzle-orm";
+import { headers } from "next/headers";
 import { redirect } from "next/navigation";
+import { parseAdmissionMessages } from "@/lib/admission-settings";
 import { requireAdminSession } from "@/lib/auth/require-admin";
 import { db } from "@/lib/database";
 
-export async function saveDiscordSettings(formData: FormData) {
+export async function saveAdmissionSettings(formData: FormData) {
-  await requireAdminSession();
+  const admin = await requireAdminSession();
+  const messages = parseAdmissionMessages(formData);
+  if (!messages) redirect("/admin/settings?error=invalid-message");
 
-  const registrationMessage = String(formData.get("registrationMessage") ?? "").trim();
+  const requestHeaders = await headers();
-
+  const ipAddress = getClientIp(requestHeaders, process.env.TRUST_PROXY === "true");
-  if (registrationMessage.length < 10 || registrationMessage.length > 500) {
+  await db.transaction(async (tx) => {
-    redirect("/admin/settings?error=invalid-message");
+    const [previous] = await tx.select().from(appSettings).where(eq(appSettings.id, "default")).limit(1);
-  }
+    const changedFields = (Object.keys(messages) as Array<keyof typeof messages>)
-
+      .filter((field) => previous?.[field] !== messages[field]);
-  await db
+    await tx.insert(appSettings)
-    .insert(appSettings)
+      .values({ id: "default", ...messages })
-    .values({
-      id: "default",
-      registrationMessage,
-    })
       .onConflictDoUpdate({
         target: appSettings.id,
-      set: {
+        set: { ...messages, updatedAt: new Date() },
-        registrationMessage,
+      });
-        updatedAt: new Date(),
+    if (changedFields.length) {
-      },
+      await tx.insert(events).values({
+        id: randomUUID(),
+        source: "/web/admin",
+        type: "games.minecraft.account-manager.settings.admission-messages-updated",
+        subject: "settings/default",
+        time: new Date(),
+        data: { changedFields, adminEmail: admin.email, adminName: admin.name },
+        ipAddress: ipAddress ?? null,
+      });
+    }
   });
 
   redirect("/admin/settings?saved=1");

apps/web/src/app/admin/(console)/groups/[groupId]/page.tsx

@@ -3,11 +3,12 @@ import { asc, eq } from "drizzle-orm";
 import Link from "next/link";
 import { notFound } from "next/navigation";
 import { db } from "@/lib/database";
-import { addGroupMember, assignDefaultGroup, deleteGroup, removeGroupMember, setGroupAccess } from "../actions";
+import { addGroupMember, assignDefaultGroup, deleteGroup, removeGroupMember, setGroupAccess, setGroupAnonymizedNetworkAccess } from "../actions";
 
 const savedMessages: Record<string, string> = {
   created: "Group created with access disabled.",
   access: "Group access policy updated.",
+  "network-access": "Group VPN, proxy, and Tor policy updated.",
   "member-added": "User assigned to the group.",
   "member-removed": "User returned to the default group.",
 };
@@ -54,6 +55,7 @@ export default async function GroupPage({
           <div className="mt-4 flex flex-wrap items-center gap-3"><h1 className="font-display text-5xl font-black uppercase sm:text-7xl">{group.name}</h1>{group.isDefault && <span className="bg-ink px-3 py-2 font-mono text-[9px] font-bold uppercase text-canvas">Default</span>}</div>
           <p className="mt-3 max-w-2xl text-sm leading-6 text-muted">{group.description ?? "No description."}</p>
         </div>
+        <div className="grid gap-6 sm:grid-cols-2">
           <form action={setGroupAccess} className="border-l-2 border-accent pl-5">
             <input name="groupId" type="hidden" value={group.id} />
             <input name="accessEnabled" type="hidden" value={group.accessEnabled ? "no" : "yes"} />
@@ -61,6 +63,14 @@ export default async function GroupPage({
             <p className="mt-2 font-display text-2xl font-black uppercase">{group.accessEnabled ? "Allowed" : "Denied"}</p>
             <button className="mt-3 font-mono text-[9px] font-bold uppercase text-accent underline underline-offset-4" type="submit">Turn access {group.accessEnabled ? "off" : "on"}</button>
           </form>
+          <form action={setGroupAnonymizedNetworkAccess} className="border-l-2 border-accent pl-5">
+            <input name="groupId" type="hidden" value={group.id} />
+            <input name="anonymizedNetworksAllowed" type="hidden" value={group.anonymizedNetworksAllowed ? "no" : "yes"} />
+            <p className="font-mono text-[9px] font-bold uppercase tracking-widest text-muted">VPN / proxy / Tor</p>
+            <p className="mt-2 font-display text-2xl font-black uppercase">{group.anonymizedNetworksAllowed ? "Allowed" : "Denied"}</p>
+            <button className="mt-3 font-mono text-[9px] font-bold uppercase text-accent underline underline-offset-4" type="submit">Turn exceptions {group.anonymizedNetworksAllowed ? "off" : "on"}</button>
+          </form>
+        </div>
       </header>
 
       {query.saved && <p className="mt-7 border-l-2 border-signal bg-panel px-5 py-4 font-mono text-xs font-bold uppercase tracking-wider" role="status">{savedMessages[query.saved] ?? "Group updated."}</p>}

apps/web/src/app/admin/(console)/groups/actions.ts

@@ -33,6 +33,7 @@ export async function createGroup(formData: FormData) {
       slug,
       description: description || null,
       accessEnabled: false,
+      anonymizedNetworksAllowed: false,
       isDefault: false,
     }).returning({ id: groups.id });
   } catch {
@@ -44,6 +45,7 @@ export async function createGroup(formData: FormData) {
     name,
     slug,
     accessEnabled: false,
+    anonymizedNetworksAllowed: false,
   });
   redirect(groupPath(group.id, "saved=created"));
 }
@@ -65,6 +67,33 @@ export async function setGroupAccess(formData: FormData) {
   redirect(groupPath(group.id, "saved=access"));
 }
 
+export async function setGroupAnonymizedNetworkAccess(formData: FormData) {
+  const admin = await requireAdminSession();
+  const groupId = String(formData.get("groupId") ?? "");
+  const anonymizedNetworksAllowed = formData.get("anonymizedNetworksAllowed") === "yes";
+  if (!UUID_PATTERN.test(groupId)) redirect("/admin/groups?error=unknown-group");
+  const requestHeaders = await headers();
+  const ipAddress = getClientIp(requestHeaders, process.env.TRUST_PROXY === "true");
+
+  const group = await db.transaction(async (tx) => {
+    const [updated] = await tx.update(groups).set({ anonymizedNetworksAllowed, updatedAt: new Date() })
+      .where(eq(groups.id, groupId)).returning({ id: groups.id, name: groups.name });
+    if (!updated) return null;
+    await tx.insert(events).values({
+      id: randomUUID(),
+      source: "/web/admin",
+      type: "games.minecraft.account-manager.group.anonymized-network-access-updated",
+      subject: `group/${updated.id}`,
+      time: new Date(),
+      data: { name: updated.name, anonymizedNetworksAllowed, adminEmail: admin.email, adminName: admin.name },
+      ipAddress: ipAddress ?? null,
+    });
+    return updated;
+  });
+  if (!group) redirect("/admin/groups?error=unknown-group");
+  redirect(groupPath(group.id, "saved=network-access"));
+}
+
 export async function addGroupMember(formData: FormData) {
   const admin = await requireAdminSession();
   const groupId = String(formData.get("groupId") ?? "");

apps/web/src/app/admin/(console)/groups/page.tsx

@@ -53,7 +53,7 @@ export default async function GroupsPage({ searchParams }: { searchParams: Promi
                   </div>
                   <p className="mt-1 font-mono text-[10px] text-muted">{group.slug} · {memberCount} members</p>
                 </div>
-                <span className={`px-3 py-2 font-mono text-[9px] font-bold uppercase ${group.accessEnabled ? "bg-signal text-ink" : "bg-accent text-canvas"}`}>{group.accessEnabled ? "Access on" : "Access off"}</span>
+                <div className="flex flex-col items-end gap-2"><span className={`px-3 py-2 font-mono text-[9px] font-bold uppercase ${group.accessEnabled ? "bg-signal text-ink" : "bg-accent text-canvas"}`}>{group.accessEnabled ? "Access on" : "Access off"}</span><span className="font-mono text-[9px] font-bold uppercase text-muted">VPN {group.anonymizedNetworksAllowed ? "allowed" : "denied"}</span></div>
               </div>
               <p className="mt-4 min-h-12 text-sm leading-6 text-muted">{group.description ?? "No description."}</p>
               <div className="mt-5 flex items-center justify-between gap-4 border-t border-line pt-4">
@@ -76,7 +76,7 @@ export default async function GroupsPage({ searchParams }: { searchParams: Promi
           <label className="text-sm font-bold">Slug<input className="mt-2 w-full border border-line bg-canvas px-4 py-3 font-mono font-normal outline-none focus:border-accent" maxLength={50} name="slug" pattern="[a-z0-9]+(?:-[a-z0-9]+)*" placeholder="ops" required /></label>
         </div>
         <label className="mt-5 block text-sm font-bold">Description<textarea className="mt-2 min-h-24 w-full border border-line bg-canvas px-4 py-3 font-normal outline-none focus:border-accent" maxLength={500} name="description" /></label>
-        <p className="mt-4 text-xs text-muted">New groups start with access disabled.</p>
+        <p className="mt-4 text-xs text-muted">New groups start with Minecraft access and VPN/proxy/Tor exceptions disabled.</p>
         <button className="mt-6 border border-ink bg-ink px-5 py-3 font-mono text-[10px] font-bold uppercase tracking-wider text-canvas" type="submit">Create group</button>
       </form>
     </main>

apps/web/src/app/admin/(console)/settings/page.tsx

@@ -1,7 +1,8 @@
 import { appSettings } from "@minecraft-account-manager/database";
 import { eq } from "drizzle-orm";
+import { DEFAULT_ADMISSION_MESSAGES } from "@/lib/admission-settings";
 import { db } from "@/lib/database";
-import { saveDiscordSettings } from "../actions";
+import { saveAdmissionSettings } from "../actions";
 
 export const dynamic = "force-dynamic";
 
@@ -12,7 +13,11 @@ export default async function SettingsPage({
 }) {
   const query = await searchParams;
   const [settings] = await db.select().from(appSettings).where(eq(appSettings.id, "default")).limit(1);
-  const message = settings?.registrationMessage ?? "Please register your Minecraft account before joining.";
+  const messages = {
+    registrationMessage: settings?.registrationMessage ?? DEFAULT_ADMISSION_MESSAGES.registrationMessage,
+    groupAccessDeniedMessage: settings?.groupAccessDeniedMessage ?? DEFAULT_ADMISSION_MESSAGES.groupAccessDeniedMessage,
+    vpnDeniedMessage: settings?.vpnDeniedMessage ?? DEFAULT_ADMISSION_MESSAGES.vpnDeniedMessage,
+  };
   const guildId = process.env.DISCORD_GUILD_ID?.trim();
   const inviteUrl = process.env.DISCORD_INVITE_URL?.trim();
 
@@ -29,23 +34,50 @@ export default async function SettingsPage({
           </dl>
         </section>
 
-        <form action={saveDiscordSettings} className="border border-line bg-panel p-7 shadow-[8px_8px_0_var(--color-shadow)] sm:p-9">
+        <form action={saveAdmissionSettings} className="border border-line bg-panel p-7 shadow-[8px_8px_0_var(--color-shadow)] sm:p-9">
           {query.saved && <p className="mb-6 border-l-2 border-signal pl-4 font-mono text-xs font-bold uppercase tracking-wider" role="status">Settings saved</p>}
           {query.error && <p className="mb-6 border-l-2 border-accent pl-4 text-sm" role="alert">Check the configuration value and try again.</p>}
 
-          <label className="block font-mono text-xs font-bold uppercase tracking-wider" htmlFor="registrationMessage">Denied-player message</label>
+          <fieldset className="space-y-7">
-          <textarea
+            <legend className="font-display text-2xl font-black uppercase">Minecraft denial messages</legend>
-            className="mt-3 min-h-32 w-full resize-y border border-line bg-canvas px-4 py-3 text-sm leading-6 outline-none focus:border-accent"
+            <p className="text-sm leading-6 text-muted">Each plain-text message is returned for one admission outcome. Messages must be between 10 and 500 characters.</p>
-            defaultValue={message}
+            <AdmissionMessageField description="Shown when the Minecraft identity is not registered." label="Registration required" name="registrationMessage" value={messages.registrationMessage} />
-            id="registrationMessage"
+            <AdmissionMessageField description="Shown when the effective group has Minecraft access disabled." label="Group access disabled" name="groupAccessDeniedMessage" value={messages.groupAccessDeniedMessage} />
-            maxLength={500}
+            <AdmissionMessageField description="Shown for VPN, proxy, or Tor connections when the effective group has no exception." label="VPN, proxy, or Tor denied" name="vpnDeniedMessage" value={messages.vpnDeniedMessage} />
-            minLength={10}
+          </fieldset>
-            name="registrationMessage"
-            required
-          />
           <button className="mt-8 border border-ink bg-ink px-6 py-3 font-mono text-xs font-bold uppercase tracking-[0.16em] text-canvas hover:bg-accent" type="submit">Save configuration</button>
         </form>
       </div>
     </main>
   );
 }
+
+function AdmissionMessageField({
+  description,
+  label,
+  name,
+  value,
+}: {
+  description: string;
+  label: string;
+  name: "registrationMessage" | "groupAccessDeniedMessage" | "vpnDeniedMessage";
+  value: string;
+}) {
+  const descriptionId = `${name}-description`;
+  return (
+    <div>
+      <label className="block font-mono text-xs font-bold uppercase tracking-wider" htmlFor={name}>{label}</label>
+      <p className="mt-2 text-xs leading-5 text-muted" id={descriptionId}>{description}</p>
+      <textarea
+        aria-describedby={descriptionId}
+        className="mt-3 min-h-28 w-full resize-y border border-line bg-canvas px-4 py-3 text-sm leading-6 outline-none focus:border-accent"
+        defaultValue={value}
+        id={name}
+        maxLength={500}
+        minLength={10}
+        name={name}
+        required
+      />
+    </div>
+  );
+}

apps/web/src/app/admin/(console)/users/[userId]/page.tsx

@@ -86,7 +86,7 @@ export default async function AdminUserPage({
       .orderBy(desc(ipObservations.observedAt))
       .limit(100),
     discordIdentity(user),
-    db.select({ id: groups.id, name: groups.name, accessEnabled: groups.accessEnabled, isDefault: groups.isDefault })
+    db.select({ id: groups.id, name: groups.name, accessEnabled: groups.accessEnabled, anonymizedNetworksAllowed: groups.anonymizedNetworksAllowed, isDefault: groups.isDefault })
       .from(groups)
       .leftJoin(userGroupMemberships, eq(userGroupMemberships.groupId, groups.id))
       .where(or(eq(groups.isDefault, true), eq(userGroupMemberships.userId, user.id)))
@@ -208,7 +208,7 @@ export default async function AdminUserPage({
 
           <section className="border border-line bg-panel p-6">
             <div className="flex items-center justify-between gap-3"><p className="font-mono text-[9px] font-bold uppercase tracking-widest text-muted">Access groups</p><Link className="font-mono text-[9px] font-bold uppercase underline underline-offset-4" href="/admin/groups">Manage</Link></div>
-            {effectiveGroup ? <div className="mt-4 flex items-center justify-between gap-3"><Link className="font-mono text-xs font-bold underline decoration-line underline-offset-4" href={`/admin/groups/${effectiveGroup.id}`}>{effectiveGroup.name}{effectiveGroup.isDefault ? " · default" : ""}</Link><span className={`px-2 py-1 font-mono text-[9px] font-bold uppercase ${effectiveGroup.accessEnabled ? "bg-signal text-ink" : "bg-accent text-canvas"}`}>{effectiveGroup.accessEnabled ? "On" : "Off"}</span></div> : <p className="mt-4 text-sm text-accent">No effective group configured.</p>}
+            {effectiveGroup ? <div className="mt-4 flex flex-wrap items-center justify-between gap-3"><Link className="font-mono text-xs font-bold underline decoration-line underline-offset-4" href={`/admin/groups/${effectiveGroup.id}`}>{effectiveGroup.name}{effectiveGroup.isDefault ? " · default" : ""}</Link><div className="flex gap-2"><span className={`px-2 py-1 font-mono text-[9px] font-bold uppercase ${effectiveGroup.accessEnabled ? "bg-signal text-ink" : "bg-accent text-canvas"}`}>{effectiveGroup.accessEnabled ? "Access on" : "Access off"}</span><span className="border border-line px-2 py-1 font-mono text-[9px] font-bold uppercase">VPN {effectiveGroup.anonymizedNetworksAllowed ? "allowed" : "denied"}</span></div></div> : <p className="mt-4 text-sm text-accent">No effective group configured.</p>}
           </section>
 
           <section className="border border-line bg-panel p-6">

apps/web/src/app/admin/(console)/users/actions.ts

@@ -1,12 +1,15 @@
 "use server";
 
+import { randomUUID } from "node:crypto";
 import {
   formatManagedDiscordNickname,
   lookupJavaProfile,
   updateGuildNickname,
 } from "@minecraft-account-manager/minecraft";
-import { minecraftAccounts, users } from "@minecraft-account-manager/database";
+import { events, groups, minecraftAccounts, userGroupMemberships, users } from "@minecraft-account-manager/database";
-import { and, eq, isNull, ne } from "drizzle-orm";
+import { getClientIp } from "@minecraft-account-manager/network";
+import { and, eq, isNull, ne, sql } from "drizzle-orm";
+import { headers } from "next/headers";
 import { redirect } from "next/navigation";
 import { recordAdminEvent } from "@/lib/audit";
 import { requireAdminSession } from "@/lib/auth/require-admin";
@@ -19,6 +22,12 @@ function userPath(userId: string, query?: string) {
   return `/admin/users/${encodeURIComponent(userId)}${query ? `?${query}` : ""}`;
 }
 
+function userRegistryPath(search: string, result: "saved=group" | "error=invalid-group-assignment") {
+  const query = new URLSearchParams(result);
+  if (search) query.set("q", search);
+  return `/admin/users?${query.toString()}`;
+}
+
 async function targetUser(userId: string) {
   if (!UUID_PATTERN.test(userId)) return null;
   const [user] = await db.select().from(users).where(eq(users.id, userId)).limit(1);
@@ -72,6 +81,61 @@ async function recordSyncFailure(
   );
 }
 
+export async function assignUserGroupFromRegistry(formData: FormData) {
+  const admin = await requireAdminSession();
+  const userId = String(formData.get("userId") ?? "");
+  const groupId = String(formData.get("groupId") ?? "");
+  const search = String(formData.get("search") ?? "").trim().slice(0, 100);
+  if (!UUID_PATTERN.test(userId) || !UUID_PATTERN.test(groupId)) redirect(userRegistryPath(search, "error=invalid-group-assignment"));
+
+  const [[user], [targetGroup]] = await Promise.all([
+    db.select({ id: users.id }).from(users).where(eq(users.id, userId)).limit(1),
+    db.select({ id: groups.id, name: groups.name, isDefault: groups.isDefault }).from(groups).where(eq(groups.id, groupId)).limit(1),
+  ]);
+  if (!user || !targetGroup) redirect(userRegistryPath(search, "error=invalid-group-assignment"));
+
+  const requestHeaders = await headers();
+  const ipAddress = getClientIp(requestHeaders, process.env.TRUST_PROXY === "true");
+  try {
+    await db.transaction(async (tx) => {
+      await tx.execute(sql`select ${users.id} from ${users} where ${users.id} = ${user.id} for update`);
+      const [previous] = await tx.select({ id: groups.id, name: groups.name })
+        .from(userGroupMemberships)
+        .innerJoin(groups, eq(groups.id, userGroupMemberships.groupId))
+        .where(eq(userGroupMemberships.userId, user.id))
+        .limit(1);
+      if (targetGroup.isDefault) {
+        await tx.delete(userGroupMemberships).where(eq(userGroupMemberships.userId, user.id));
+      } else {
+        await tx.insert(userGroupMemberships).values({ userId: user.id, groupId: targetGroup.id })
+          .onConflictDoUpdate({
+            target: userGroupMemberships.userId,
+            set: { groupId: targetGroup.id },
+          });
+      }
+      await tx.insert(events).values({
+        id: randomUUID(),
+        source: "/web/admin",
+        type: "games.minecraft.account-manager.group.assignment-updated",
+        subject: `user/${user.id}`,
+        time: new Date(),
+        data: {
+          groupId: targetGroup.id,
+          groupName: targetGroup.name,
+          previousGroupId: previous?.id ?? null,
+          previousGroupName: previous?.name ?? "everyone",
+          adminEmail: admin.email,
+          adminName: admin.name,
+        },
+        ipAddress: ipAddress ?? null,
+      });
+    });
+  } catch {
+    redirect(userRegistryPath(search, "error=invalid-group-assignment"));
+  }
+  redirect(userRegistryPath(search, "saved=group"));
+}
+
 export async function updateUserName(formData: FormData) {
   const admin = await requireAdminSession();
   const userId = String(formData.get("userId") ?? "");

apps/web/src/app/admin/(console)/users/page.tsx

@@ -1,14 +1,16 @@
-import { minecraftAccounts, users } from "@minecraft-account-manager/database";
+import { groups, minecraftAccounts, userGroupMemberships, users } from "@minecraft-account-manager/database";
-import { and, eq, ilike, isNull, or, sql } from "drizzle-orm";
+import { and, asc, desc, eq, ilike, isNull, or, sql } from "drizzle-orm";
 import Link from "next/link";
+import { UserGroupSelect } from "@/components/user-group-select";
 import { db } from "@/lib/database";
+import { assignUserGroupFromRegistry } from "./actions";
 
 export const dynamic = "force-dynamic";
 
 export default async function AdminUsersPage({
   searchParams,
 }: {
-  searchParams: Promise<{ q?: string; error?: string }>;
+  searchParams: Promise<{ q?: string; error?: string; saved?: string }>;
 }) {
   const query = await searchParams;
   const search = query.q?.trim().slice(0, 100) ?? "";
@@ -31,7 +33,8 @@ export default async function AdminUsersPage({
       )
     : undefined;
 
-  const results = await db
+  const [results, allGroups, memberships] = await Promise.all([
+    db
       .select({
         id: users.id,
         firstName: users.firstName,
@@ -57,7 +60,14 @@ export default async function AdminUsersPage({
       )
       .where(where)
       .orderBy(users.firstName, users.discordUsername)
-    .limit(100);
+      .limit(100),
+    db.select({ id: groups.id, name: groups.name, isDefault: groups.isDefault })
+      .from(groups).orderBy(desc(groups.isDefault), asc(groups.name)),
+    db.select({ userId: userGroupMemberships.userId, groupId: userGroupMemberships.groupId })
+      .from(userGroupMemberships),
+  ]);
+  const defaultGroup = allGroups.find((group) => group.isDefault);
+  const groupByUser = new Map(memberships.map((membership) => [membership.userId, membership.groupId]));
 
   return (
     <main className="mx-auto max-w-6xl px-6 py-14">
@@ -79,13 +89,14 @@ export default async function AdminUsersPage({
         </form>
       </div>
 
-      {query.error && <p className="mt-7 border-l-2 border-accent bg-panel px-5 py-4 text-sm text-accent" role="alert">The requested user could not be found.</p>}
+      {query.error && <p className="mt-7 border-l-2 border-accent bg-panel px-5 py-4 text-sm text-accent" role="alert">{query.error === "invalid-group-assignment" ? "The user or group no longer exists. No group change was applied." : "The requested user could not be found."}</p>}
+      {query.saved === "group" && <p className="mt-7 border-l-2 border-signal bg-panel px-5 py-4 text-sm" role="status">User group updated.</p>}
 
       <div className="mt-8 overflow-x-auto border border-line bg-panel shadow-[8px_8px_0_var(--color-shadow)]">
-        <table className="w-full min-w-[760px] border-collapse text-left">
+        <table className="w-full min-w-[900px] border-collapse text-left">
           <caption className="sr-only">Registered portal users</caption>
           <thead className="border-b border-line font-mono text-[10px] uppercase tracking-widest text-muted">
-            <tr><th className="p-4" scope="col">User</th><th className="p-4" scope="col">Discord</th><th className="p-4" scope="col">Primary</th><th className="p-4" scope="col">Accounts</th><th className="p-4" scope="col">Status</th></tr>
+            <tr><th className="p-4" scope="col">User</th><th className="p-4" scope="col">Discord</th><th className="p-4" scope="col">Primary</th><th className="p-4" scope="col">Accounts</th><th className="p-4" scope="col">Group</th><th className="p-4" scope="col">Status</th></tr>
           </thead>
           <tbody className="divide-y divide-line">
             {results.map((user) => (
@@ -94,10 +105,11 @@ export default async function AdminUsersPage({
                 <td className="p-4"><div className="font-mono text-xs font-bold">{user.discordGlobalName ?? user.discordUsername}</div><div className="mt-1 font-mono text-[10px] text-muted">@{user.discordUsername}</div><div className="mt-1 font-mono text-[9px] text-muted">{user.discordUserId}</div></td>
                 <td className="p-4 font-mono text-xs">{user.primaryUsername ?? "—"}</td>
                 <td className="p-4 font-mono text-xs">{user.accountCount}</td>
+                <td className="p-4">{defaultGroup ? <UserGroupSelect action={assignUserGroupFromRegistry} effectiveGroupId={groupByUser.get(user.id) ?? defaultGroup.id} groups={allGroups} search={search} userId={user.id} userLabel={user.firstName ?? user.discordUsername} /> : <span className="text-xs text-accent">Default group missing</span>}</td>
                 <td className="p-4"><span className={`border px-2 py-1 font-mono text-[9px] uppercase tracking-wider ${user.onboardingCompletedAt ? "border-line text-muted" : "border-accent text-accent"}`}>{user.onboardingCompletedAt ? "Ready" : "Onboarding"}</span></td>
               </tr>
             ))}
-            {!results.length && <tr><td className="p-8 text-muted" colSpan={5}>No users match that search.</td></tr>}
+            {!results.length && <tr><td className="p-8 text-muted" colSpan={6}>No users match that search.</td></tr>}
           </tbody>
         </table>
       </div>

apps/web/src/app/api/velocity/access/route.ts

@@ -1,5 +1,5 @@
 import { randomUUID } from "node:crypto";
-import { isRequestTimestampFresh, resolveEffectiveGroup, verifyHashedToken } from "@minecraft-account-manager/auth";
+import { gameAdmissionDenialReason, isRequestTimestampFresh, resolveEffectiveGroup, verifyHashedToken } from "@minecraft-account-manager/auth";
 import { problemDetails, velocityAccessRequestSchema } from "@minecraft-account-manager/contracts";
 import {
   appSettings,
@@ -13,6 +13,7 @@ import {
 } from "@minecraft-account-manager/database";
 import { and, eq, isNull, lt, sql } from "drizzle-orm";
 import { NextResponse } from "next/server";
+import { admissionDenialMessage, DEFAULT_ADMISSION_MESSAGES } from "@/lib/admission-settings";
 import { db } from "@/lib/database";
 import { isUniqueConstraintViolation } from "@/lib/database-errors";
 import { getIpIntelligence, toAuditIpData } from "@/lib/ip-intelligence";
@@ -20,7 +21,6 @@ import { logger } from "@/lib/logger";
 import { problemInstance, problemResponse } from "@/lib/problem-response";
 
 const MAX_CLOCK_SKEW_MS = 45_000;
-const DEFAULT_DENIAL_MESSAGE = "Please register your Minecraft account before joining.";
 
 function methodNotAllowed(request: Request) {
   const response = problemResponse(problemDetails(
@@ -111,35 +111,13 @@ async function handleVelocityAccess(request: Request) {
   }
 
   const [settings] = await db.select().from(appSettings).where(eq(appSettings.id, "default")).limit(1);
-  const denialMessage = settings?.registrationMessage ?? DEFAULT_DENIAL_MESSAGE;
+  const admissionMessages = {
+    registrationMessage: settings?.registrationMessage ?? DEFAULT_ADMISSION_MESSAGES.registrationMessage,
+    groupAccessDeniedMessage: settings?.groupAccessDeniedMessage ?? DEFAULT_ADMISSION_MESSAGES.groupAccessDeniedMessage,
+    vpnDeniedMessage: settings?.vpnDeniedMessage ?? DEFAULT_ADMISSION_MESSAGES.vpnDeniedMessage,
+  };
 
-  let [knownAccount] = await db
+  const intelligence = await getIpIntelligence(input.ipAddress);
-    .select({ id: minecraftAccounts.id })
-    .from(minecraftAccounts)
-    .where(
-      and(
-        eq(minecraftAccounts.minecraftUuid, input.minecraftUuid),
-        isNull(minecraftAccounts.deletedAt),
-      ),
-    )
-    .limit(1);
-  if (!knownAccount) {
-    [knownAccount] = await db
-      .select({ id: minecraftAccounts.id })
-      .from(minecraftAccounts)
-      .where(
-        and(
-          isNull(minecraftAccounts.minecraftUuid),
-          sql`lower(${minecraftAccounts.username}) = lower(${input.username})`,
-          isNull(minecraftAccounts.deletedAt),
-        ),
-      )
-      .limit(1);
-  }
-
-  const intelligence = knownAccount
-    ? await getIpIntelligence(input.ipAddress)
-    : { classification: "unknown" as const, provider: null };
   const auditIpData = toAuditIpData(intelligence);
 
   const decision = await db.transaction(async (tx) => {
@@ -209,23 +187,24 @@ async function handleVelocityAccess(request: Request) {
           classification: intelligence.classification,
           observedAt: occurredAt,
         });
-        return { allowed: false as const, message: denialMessage };
+        return { allowed: false as const, message: admissionDenialMessage("not_registered", admissionMessages) };
       }
 
       const [explicitGroup] = await tx
-        .select({ id: groups.id, name: groups.name, accessEnabled: groups.accessEnabled })
+        .select({ id: groups.id, name: groups.name, accessEnabled: groups.accessEnabled, anonymizedNetworksAllowed: groups.anonymizedNetworksAllowed })
         .from(userGroupMemberships)
         .innerJoin(groups, eq(groups.id, userGroupMemberships.groupId))
         .where(eq(userGroupMemberships.userId, account.userId))
         .limit(1);
       const [defaultGroup] = await tx
-        .select({ id: groups.id, name: groups.name, accessEnabled: groups.accessEnabled })
+        .select({ id: groups.id, name: groups.name, accessEnabled: groups.accessEnabled, anonymizedNetworksAllowed: groups.anonymizedNetworksAllowed })
         .from(groups)
         .where(eq(groups.isDefault, true))
         .limit(1);
       const effectiveGroup = resolveEffectiveGroup(explicitGroup ?? null, defaultGroup ?? null);
 
-      if (!effectiveGroup?.accessEnabled) {
+      const denialReason = gameAdmissionDenialReason(effectiveGroup ?? null, intelligence.classification);
+      if (denialReason) {
         await tx.insert(events).values({
           id: randomUUID(),
           source: `/velocity/${input.serverId}`,
@@ -235,7 +214,9 @@ async function handleVelocityAccess(request: Request) {
           actorUserId: account.userId,
           data: {
             username: input.username,
-            reason: "group_access_disabled",
+            reason: denialReason,
+            accessGroup: effectiveGroup?.name ?? null,
+            accessGroupId: effectiveGroup?.id ?? null,
             ipIntelligence: auditIpData,
           },
           ipAddress: input.ipAddress,
@@ -251,9 +232,14 @@ async function handleVelocityAccess(request: Request) {
           classification: intelligence.classification,
           observedAt: occurredAt,
         });
-        return { allowed: false as const, message: "Your account group does not currently have server access." };
+        return {
+          allowed: false as const,
+          message: admissionDenialMessage(denialReason, admissionMessages),
+        };
       }
 
+      if (!effectiveGroup) throw new Error("Effective access group is unavailable after admission approval");
+
       if (account.minecraftUuid !== input.minecraftUuid || account.username !== input.username) {
         await tx
           .update(minecraftAccounts)
@@ -304,6 +290,7 @@ async function handleVelocityAccess(request: Request) {
           uuidBackfilled: account.minecraftUuid === null,
           ipIntelligence: auditIpData,
           accessGroup: effectiveGroup.name,
+          accessGroupId: effectiveGroup.id,
         },
         ipAddress: input.ipAddress,
         correlationId: input.requestId,

apps/web/src/components/user-group-select.test.tsx

@@ -0,0 +1,21 @@
+import { renderToStaticMarkup } from "react-dom/server";
+import { describe, expect, it } from "vitest";
+import { UserGroupSelect } from "./user-group-select";
+
+describe("UserGroupSelect", () => {
+  it("renders the effective group and preserves the active search", () => {
+    const markup = renderToStaticMarkup(<UserGroupSelect
+      action={async () => undefined}
+      effectiveGroupId="group-ops"
+      groups={[{ id: "group-everyone", name: "everyone" }, { id: "group-ops", name: "Ops" }]}
+      search="alex smith"
+      userId="user-one"
+      userLabel="Alex"
+    />);
+
+    expect(markup).toContain('aria-label="Group for Alex"');
+    expect(markup).toContain('<option value="group-ops" selected="">Ops</option>');
+    expect(markup).toContain('<input type="hidden" name="search" value="alex smith"/>');
+    expect(markup).toContain("Apply group");
+  });
+});

apps/web/src/components/user-group-select.tsx

@@ -0,0 +1,60 @@
+"use client";
+
+import { useFormStatus } from "react-dom";
+
+export function UserGroupSelect({
+  action,
+  effectiveGroupId,
+  groups,
+  search,
+  userId,
+  userLabel,
+}: {
+  action: (formData: FormData) => Promise<void>;
+  effectiveGroupId: string;
+  groups: Array<{ id: string; name: string }>;
+  search: string;
+  userId: string;
+  userLabel: string;
+}) {
+  const helpId = `group-help-${userId}`;
+  return (
+    <form action={action} className="flex items-center gap-2">
+      <input name="userId" type="hidden" value={userId} />
+      <input name="search" type="hidden" value={search} />
+      <span className="sr-only" id={helpId}>Changing this selection applies the group immediately.</span>
+      <GroupSelectControl effectiveGroupId={effectiveGroupId} groups={groups} helpId={helpId} userLabel={userLabel} />
+    </form>
+  );
+}
+
+function GroupSelectControl({
+  effectiveGroupId,
+  groups,
+  helpId,
+  userLabel,
+}: {
+  effectiveGroupId: string;
+  groups: Array<{ id: string; name: string }>;
+  helpId: string;
+  userLabel: string;
+}) {
+  const { pending } = useFormStatus();
+  return (
+    <>
+      <select
+        aria-describedby={helpId}
+        aria-label={`Group for ${userLabel}`}
+        className="max-w-44 border border-line bg-canvas px-3 py-2 font-mono text-xs outline-none focus:border-accent disabled:cursor-wait disabled:opacity-60"
+        defaultValue={effectiveGroupId}
+        disabled={pending}
+        name="groupId"
+        onChange={(event) => event.currentTarget.form?.requestSubmit()}
+      >
+        {groups.map((group) => <option key={group.id} value={group.id}>{group.name}</option>)}
+      </select>
+      <span aria-live="polite" className="sr-only">{pending ? "Updating group." : ""}</span>
+      <button className="sr-only focus:not-sr-only" disabled={pending} type="submit">Apply group</button>
+    </>
+  );
+}

apps/web/src/lib/admission-settings.test.ts

@@ -0,0 +1,33 @@
+import { describe, expect, it } from "vitest";
+import { admissionDenialMessage, DEFAULT_ADMISSION_MESSAGES, parseAdmissionMessages } from "./admission-settings";
+
+describe("admission message settings", () => {
+  it("normalizes three independently configured denial messages", () => {
+    const formData = new FormData();
+    formData.set("registrationMessage", "  Register your account before joining.  ");
+    formData.set("groupAccessDeniedMessage", "This group cannot access the server right now.");
+    formData.set("vpnDeniedMessage", "VPN access requires a host-approved exception.");
+
+    expect(parseAdmissionMessages(formData)).toEqual({
+      registrationMessage: "Register your account before joining.",
+      groupAccessDeniedMessage: "This group cannot access the server right now.",
+      vpnDeniedMessage: "VPN access requires a host-approved exception.",
+    });
+  });
+
+  it("selects the configured message for each admission denial reason", () => {
+    expect(admissionDenialMessage("not_registered", DEFAULT_ADMISSION_MESSAGES)).toBe(DEFAULT_ADMISSION_MESSAGES.registrationMessage);
+    expect(admissionDenialMessage("group_access_disabled", DEFAULT_ADMISSION_MESSAGES)).toBe(DEFAULT_ADMISSION_MESSAGES.groupAccessDeniedMessage);
+    expect(admissionDenialMessage("anonymized_network_disallowed", DEFAULT_ADMISSION_MESSAGES)).toBe(DEFAULT_ADMISSION_MESSAGES.vpnDeniedMessage);
+  });
+
+  it("rejects missing, short, overlong, or control-character messages", () => {
+    for (const invalid of ["short", "a".repeat(501), "Denied\nInjected"] as const) {
+      const formData = new FormData();
+      formData.set("registrationMessage", DEFAULT_ADMISSION_MESSAGES.registrationMessage);
+      formData.set("groupAccessDeniedMessage", DEFAULT_ADMISSION_MESSAGES.groupAccessDeniedMessage);
+      formData.set("vpnDeniedMessage", invalid);
+      expect(parseAdmissionMessages(formData)).toBeNull();
+    }
+  });
+});

apps/web/src/lib/admission-settings.ts

@@ -0,0 +1,37 @@
+export interface AdmissionMessages {
+  registrationMessage: string;
+  groupAccessDeniedMessage: string;
+  vpnDeniedMessage: string;
+}
+
+export const DEFAULT_ADMISSION_MESSAGES: AdmissionMessages = {
+  registrationMessage: "Please register your Minecraft account before joining.",
+  groupAccessDeniedMessage: "Your account group does not currently have server access. Contact a host if you believe this is a mistake.",
+  vpnDeniedMessage: "VPN, proxy, and Tor connections are not allowed. Contact a host to request an exception.",
+} as const;
+
+export function admissionDenialMessage(
+  reason: "not_registered" | "group_access_disabled" | "anonymized_network_disallowed",
+  messages: AdmissionMessages,
+) {
+  if (reason === "not_registered") return messages.registrationMessage;
+  if (reason === "group_access_disabled") return messages.groupAccessDeniedMessage;
+  return messages.vpnDeniedMessage;
+}
+
+const CONTROL_CHARACTERS = /[\u0000-\u001f\u007f]/;
+
+function messageValue(formData: FormData, name: string) {
+  const value = String(formData.get(name) ?? "").trim();
+  return value.length >= 10 && value.length <= 500 && !CONTROL_CHARACTERS.test(value)
+    ? value
+    : null;
+}
+
+export function parseAdmissionMessages(formData: FormData) {
+  const registrationMessage = messageValue(formData, "registrationMessage");
+  const groupAccessDeniedMessage = messageValue(formData, "groupAccessDeniedMessage");
+  const vpnDeniedMessage = messageValue(formData, "vpnDeniedMessage");
+  if (!registrationMessage || !groupAccessDeniedMessage || !vpnDeniedMessage) return null;
+  return { registrationMessage, groupAccessDeniedMessage, vpnDeniedMessage };
+}

design/log.md

@@ -2,6 +2,8 @@
 
 ## 2026-08-02
 
+* **Add**: Provide Users-page group assignment, effective-group VPN/proxy/Tor exceptions for game admission, and independent configurable denial messages.
+* **Fix**: Treat malformed ProxyCheck proxy signals as unknown and classify every authenticated Velocity login before identity resolution.
 * **Fix**: Replace the dashboard's pre-enrichment network label with enriched company, ASN, connection type, Proxy/VPN status, and risk fields.
 * **Fix**: Group collocated map users into count-badged markers with complete nickname tooltips and per-user interactive-map links.
 * **Refine**: Replace registration counts with daily active users, collapse enriched VPN activity per user, add opt-in OpenStreetMap zoom, show managed nickname tooltips, and measure active Minecraft accounts from confirmed Velocity connections.

design/us-007-ip-intelligence.md

@@ -3,7 +3,7 @@ type: User Story
 title: Enrich portal and game login IPs
 description: Login audit events include cached approximate location and network intelligence from ProxyCheck.io.
 tags: [security, network, audit, proxycheck]
-timestamp: 2026-08-01T22:04:17Z
+timestamp: 2026-08-02T14:12:43Z
 story_id: US-007
 status: verified
 ---
@@ -19,7 +19,7 @@ As an operator, I want portal and registered game logins enriched with network c
 - [x] Provider failures are cached briefly and do not deny portal or registered game login.
 - [x] Private, loopback, reserved, documentation, and mapped-private addresses are never sent to ProxyCheck.
 - [x] Forwarded web IP headers are ignored unless trusted-proxy handling is explicitly enabled.
-- [x] Unknown game accounts do not trigger paid ProxyCheck lookups.
+- [x] Every authenticated Velocity login request uses the cached ProxyCheck path before identity resolution, preventing account-creation races from bypassing network policy.
 - [x] Login events and IP observations retain the available classification and approximate location.
 - [x] Users and administrators can see available location and classification in audit views.
 - [x] Repeated access observations are summarized by IPv4 /24 or IPv6 /64 network with counts, sources, and latest activity.

design/us-008-vpn-blocking.md

@@ -3,7 +3,7 @@ type: User Story
 title: Block account additions from anonymized networks
 description: User Minecraft-account additions fail closed for VPN, proxy, Tor, or unknown IP classifications.
 tags: [security, vpn, proxy, minecraft]
-timestamp: 2026-08-02T00:12:32Z
+timestamp: 2026-08-02T14:12:43Z
 story_id: US-008
 status: verified
 ---
@@ -22,6 +22,8 @@ As an operator, I want account additions blocked from anonymized networks, so th
 - [x] Blocked and classification-unavailable attempts create distinct audit events with safe intelligence details.
 - [x] Administrative account additions remain available as an authorized recovery path.
 - [x] Administrators see enriched risky-network observations collapsed to one latest summary per user.
+- [x] Game admission enforces confirmed VPN, proxy, and Tor classifications according to the user's effective-group exception policy.
+- [x] Account-addition blocking remains unchanged and independent from the game-admission exception.
 
 # Implementation
 

design/us-009-velocity-admission.md

@@ -3,7 +3,7 @@ type: User Story
 title: Enforce registration at the Velocity proxy
 description: Online-mode Java connections are admitted only after a fail-closed account-manager decision.
 tags: [minecraft, velocity, whitelist, security]
-timestamp: 2026-08-02T00:12:32Z
+timestamp: 2026-08-02T14:12:43Z
 story_id: US-009
 status: verified
 ---
@@ -27,6 +27,9 @@ As a registered player, I want the Velocity proxy to recognize my approved Java
 - [x] The plugin records the real Velocity connection IP and supports Java Edition online mode only.
 - [x] After admission, Velocity reports `PostLoginEvent` as best-effort authenticated telemetry without disconnecting an admitted player when reporting fails.
 - [x] Confirmed-connection reports use fresh timestamps and database replay protection.
+- [x] Group-disabled and VPN/proxy/Tor-policy denials return distinct operator-configured messages.
+- [x] The default anonymized-network message directs the player to contact a host for an exception.
+- [x] API failures, malformed responses, and unauthorized requests retain fail-closed plugin fallback behavior.
 
 # Implementation
 

design/us-012-admin-operations.md

@@ -3,7 +3,7 @@ type: User Story
 title: Operate settings and audit views
 description: Authorized administrators control server messaging and investigate recent platform events.
 tags: [admin, settings, audit, operations]
-timestamp: 2026-08-01T22:34:31Z
+timestamp: 2026-08-02T14:12:43Z
 story_id: US-012
 status: verified
 ---
@@ -21,11 +21,16 @@ As an administrator, I want operational settings and audit visibility, so that I
 - [x] Event views show type, subject, IP, classification, and approximate location when available.
 - [x] Admin console access itself creates an audit event with the SSO identity.
 - [x] Settings, users, and events are linked from the shared admin navigation.
+- [x] Administrators can independently configure registration-required, group-access-disabled, and VPN/proxy/Tor-denied game messages.
+- [x] Every message is validated server-side and has a safe default.
+- [x] Admission-message changes are audited with the administrator identity without logging credentials.
 
 # Implementation
 
 - [`apps/web/src/app/admin/(console)/page.tsx`](../apps/web/src/app/admin/%28console%29/page.tsx)
 - [`apps/web/src/app/admin/(console)/actions.ts`](../apps/web/src/app/admin/%28console%29/actions.ts)
+- [`apps/web/src/lib/admission-settings.ts`](../apps/web/src/lib/admission-settings.ts)
+- [`packages/database/drizzle/0004_zippy_silver_centurion.sql`](../packages/database/drizzle/0004_zippy_silver_centurion.sql)
 - [`apps/web/src/app/admin/(console)/events/page.tsx`](../apps/web/src/app/admin/%28console%29/events/page.tsx)
 
 # Validation

design/us-013-admin-user-management.md

@@ -3,7 +3,7 @@ type: User Story
 title: Manage users as an administrator
 description: Authorized operators search users and maintain their names, linked accounts, primaries, and Discord nicknames.
 tags: [admin, users, minecraft, discord]
-timestamp: 2026-08-01T22:34:31Z
+timestamp: 2026-08-02T14:12:43Z
 story_id: US-013
 status: verified
 ---
@@ -24,12 +24,17 @@ As an administrator, I want to manage a user's identity and Minecraft accounts,
 - [x] Administrators can set a new primary account and automatically update Discord.
 - [x] Every action rechecks role and account ownership and records the acting administrator.
 - [x] Discord failures do not falsely persist the requested name, primary, or removal change.
+- [x] Each row in the administrator user registry shows the user's effective group in an accessible dropdown.
+- [x] Selecting a group immediately applies the assignment; selecting `everyone` removes the explicit assignment.
+- [x] Group changes preserve the active user search and show accessible success or error feedback.
+- [x] Registry assignment changes revalidate administrator authorization, user existence, and group existence, and audit the previous and new effective groups.
 
 # Implementation
 
 - [`apps/web/src/app/admin/(console)/users/page.tsx`](../apps/web/src/app/admin/%28console%29/users/page.tsx)
 - [`apps/web/src/app/admin/(console)/users/[userId]/page.tsx`](../apps/web/src/app/admin/%28console%29/users/%5BuserId%5D/page.tsx)
 - [`apps/web/src/app/admin/(console)/users/actions.ts`](../apps/web/src/app/admin/%28console%29/users/actions.ts)
+- [`apps/web/src/components/user-group-select.tsx`](../apps/web/src/components/user-group-select.tsx)
 
 # Validation
 

design/us-017-group-access.md

@@ -3,7 +3,7 @@ type: User Story
 title: Control Minecraft admission with groups
 description: Administrators assign users to groups and enable Minecraft access through explicit group policy.
 tags: [admin, groups, authorization, velocity, security]
-timestamp: 2026-08-01T23:10:59Z
+timestamp: 2026-08-02T14:12:43Z
 story_id: US-017
 status: verified
 ---
@@ -24,12 +24,18 @@ As an administrator, I want to organize registered users into access groups, so
 - [x] The protected default group cannot be deleted.
 - [x] Group creation, membership, and access-policy changes are audited.
 - [x] Users and administrators can inspect the user's single effective group assignment.
+- [x] Every group has an independently configurable VPN/proxy/Tor exception policy.
+- [x] The protected `everyone` group and newly created groups disallow VPN, proxy, and Tor connections by default.
+- [x] Confirmed VPN, proxy, or Tor game connections are denied unless the user's single effective group allows anonymized networks.
+- [x] Clear and hosting classifications are not denied by this group policy, and unavailable intelligence does not independently deny a registered player.
+- [x] VPN policy changes are authorized server-side and audited.
 
 # Implementation
 
 - [`packages/database/src/schema.ts`](../packages/database/src/schema.ts)
 - [`packages/database/drizzle/0002_simple_queen_noir.sql`](../packages/database/drizzle/0002_simple_queen_noir.sql)
 - [`packages/database/drizzle/0003_smiling_silver_samurai.sql`](../packages/database/drizzle/0003_smiling_silver_samurai.sql)
+- [`packages/database/drizzle/0004_zippy_silver_centurion.sql`](../packages/database/drizzle/0004_zippy_silver_centurion.sql)
 - [`apps/web/src/app/admin/(console)/groups/page.tsx`](../apps/web/src/app/admin/%28console%29/groups/page.tsx)
 - [`apps/web/src/app/admin/(console)/groups/[groupId]/page.tsx`](../apps/web/src/app/admin/%28console%29/groups/%5BgroupId%5D/page.tsx)
 - [`apps/web/src/app/api/velocity/access/route.ts`](../apps/web/src/app/api/velocity/access/route.ts)

docs/accessibility.md

@@ -12,6 +12,7 @@ Player account management, administrator navigation, dashboard metrics and chart
 - Darkened the accent color so accent text reaches at least 4.5:1 contrast on both canvas and panel backgrounds.
 - Preserved reduced-motion behavior and disabled decorative cursor animation when requested.
 - Added labels or accessible names to search, Minecraft username, settings, group, and event-filter controls.
+- Added per-user group dropdowns with immediate-change instructions, keyboard submission fallback, and live success or error feedback.
 - Added `fieldset` and `legend` semantics to multi-select event-type filters.
 - Added table captions, column scopes, and row scopes to administrator data tables.
 - Added `role=status` with polite announcements for successful nickname changes and `role=alert` with assertive announcements for errors.

docs/architecture.md

@@ -16,7 +16,7 @@ The bot creates private login links in response to `/register` and `/account`. D
 
 Velocity sends the authenticated Java UUID, current username, source IP, server ID, request ID, and occurrence time. The API matches UUID first. Username fallback is allowed only when the stored account has no UUID, after which UUID and canonical username are updated.
 
-The admission decision is fail closed. Unknown players, invalid responses, expired requests, authentication failures, and unavailable API responses are denied with the configured registration message. After admission succeeds, `PostLoginEvent` reports a confirmed proxy connection through a fresh, authenticated, replay-protected request. Connection telemetry is best effort and never disconnects an already admitted player.
+The admission decision is fail closed. Unknown players, disabled effective groups, disallowed confirmed VPN/proxy/Tor connections, invalid responses, expired requests, authentication failures, and unavailable API responses are denied. Registration, group-access, and anonymized-network denials use independent operator-configured messages; transport and service failures retain the plugin's local fallback. After admission succeeds, `PostLoginEvent` reports a confirmed proxy connection through a fresh, authenticated, replay-protected request. Connection telemetry is best effort and never disconnects an already admitted player.
 
 ## Trust boundaries
 
@@ -38,7 +38,7 @@ The admission decision is fail closed. Unknown players, invalid responses, expir
 
 ## IP intelligence
 
-ProxyCheck.io supplies approximate city/region/country, coordinates, timezone, ASN, network company, connection type, proxy signal, risk, and VPN/proxy/Tor classification. Results are cached in PostgreSQL for 48 hours by default. Portal and game login events are enriched when data is available; lookup failures do not deny login. User Minecraft-account additions fail closed for unknown, VPN, proxy, or Tor classifications and record denied attempts. Hosting-provider blocking is optional through `BLOCK_HOSTING_IPS=true`. Private and reserved addresses are never sent to ProxyCheck.
+ProxyCheck.io supplies approximate city/region/country, coordinates, timezone, ASN, network company, connection type, proxy signal, risk, and VPN/proxy/Tor classification. Results are cached in PostgreSQL for 48 hours by default. Portal logins and every bearer-authenticated Velocity login are enriched through the cache before identity resolution; lookup failures do not independently deny a registered player. Confirmed VPN, proxy, and Tor game connections require an exception on the player's effective group. User Minecraft-account additions fail closed for unknown, VPN, proxy, or Tor classifications and record denied attempts. Hosting-provider blocking is optional through `BLOCK_HOSTING_IPS=true`. Private and reserved addresses are never sent to ProxyCheck.
 
 ## Event naming
 

docs/security-review.md

@@ -25,7 +25,9 @@ Next.js portal and APIs, Discord bot, PostgreSQL persistence, Keycloak admin aut
 - Velocity admission and confirmed-connection requests have a 45-second clock window and database-unique request IDs for cross-instance replay prevention.
 - Velocity and its API fail closed.
 - Registered players require an enabled effective group; explicit assignments replace rather than combine with the protected, disabled-by-default `everyone` fallback.
-- Group and membership mutations re-check the Keycloak administrator role server-side; destructive group deletion and its audit event commit atomically.
+- Confirmed VPN, proxy, and Tor game connections are denied unless that same effective group has an explicit exception; `everyone` and new groups default to no exception.
+- Group, VPN-policy, and membership mutations re-check the Keycloak administrator role server-side; registry assignments, VPN-policy changes, message settings, and destructive group deletion commit atomically with their audit events.
+- Every bearer-authenticated Velocity login uses cached IP intelligence before identity resolution, preventing account-creation races from bypassing network policy; malformed provider proxy signals classify as unknown.
 - Event filters accept only event types already present in the ledger, and event detail routes remain role-protected.
 - The administrator-only map defaults to bundled Natural Earth boundaries. OpenStreetMap tile requests begin only after an explicit operator opt-in; marker coordinates are not transmitted as data, but the requested tiles disclose the viewed geographic extent along with the administrator's IP and portal origin.
 - Grouped-map popup labels and links are created with DOM `textContent` and server-rendered React escaping rather than interpolated HTML.

packages/auth/src/index.ts

@@ -115,6 +115,24 @@ export function resolveEffectiveGroup<T>(explicitGroup: T | null, defaultGroup:
   return explicitGroup ?? defaultGroup;
 }
 
+export function isGameNetworkAllowed(
+  classification: "unknown" | "clear" | "vpn" | "proxy" | "hosting" | "tor",
+  anonymizedNetworksAllowed: boolean,
+) {
+  return anonymizedNetworksAllowed || !["vpn", "proxy", "tor"].includes(classification);
+}
+
+export function gameAdmissionDenialReason(
+  group: { accessEnabled: boolean; anonymizedNetworksAllowed: boolean } | null,
+  classification: "unknown" | "clear" | "vpn" | "proxy" | "hosting" | "tor",
+) {
+  if (!group?.accessEnabled) return "group_access_disabled" as const;
+  if (!isGameNetworkAllowed(classification, group.anonymizedNetworksAllowed)) {
+    return "anonymized_network_disallowed" as const;
+  }
+  return null;
+}
+
 export function verifyHashedToken(providedToken: string, expectedHash: string) {
   const provided = Buffer.from(hashToken(providedToken), "utf8");
   const expected = Buffer.from(expectedHash, "utf8");

packages/auth/test/group-access.test.ts

@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { resolveEffectiveGroup } from "../src/index";
+import { gameAdmissionDenialReason, isGameNetworkAllowed, resolveEffectiveGroup } from "../src/index";
 
 describe("group-based admission", () => {
   const everyone = { name: "everyone", accessEnabled: false };
@@ -17,4 +17,26 @@ describe("group-based admission", () => {
     const limited = { name: "limited", accessEnabled: false };
     expect(resolveEffectiveGroup(limited, enabledDefault)?.accessEnabled).toBe(false);
   });
+
+  it("denies confirmed anonymized game networks unless the effective group allows them", () => {
+    for (const classification of ["vpn", "proxy", "tor"] as const) {
+      expect(isGameNetworkAllowed(classification, false)).toBe(false);
+      expect(isGameNetworkAllowed(classification, true)).toBe(true);
+    }
+  });
+
+  it("does not apply the group exception policy to clear, hosting, or unavailable intelligence", () => {
+    for (const classification of ["clear", "hosting", "unknown"] as const) {
+      expect(isGameNetworkAllowed(classification, false)).toBe(true);
+    }
+  });
+
+  it("prioritizes disabled group access before the network exception policy", () => {
+    expect(gameAdmissionDenialReason({ accessEnabled: false, anonymizedNetworksAllowed: false }, "vpn"))
+      .toBe("group_access_disabled");
+    expect(gameAdmissionDenialReason({ accessEnabled: true, anonymizedNetworksAllowed: false }, "vpn"))
+      .toBe("anonymized_network_disallowed");
+    expect(gameAdmissionDenialReason({ accessEnabled: true, anonymizedNetworksAllowed: true }, "vpn"))
+      .toBeNull();
+  });
 });

packages/database/drizzle/0004_zippy_silver_centurion.sql

@@ -0,0 +1,3 @@
+ALTER TABLE "app_settings" ADD COLUMN "group_access_denied_message" text DEFAULT 'Your account group does not currently have server access. Contact a host if you believe this is a mistake.' NOT NULL;--> statement-breakpoint
+ALTER TABLE "app_settings" ADD COLUMN "vpn_denied_message" text DEFAULT 'VPN, proxy, and Tor connections are not allowed. Contact a host to request an exception.' NOT NULL;--> statement-breakpoint
+ALTER TABLE "groups" ADD COLUMN "anonymized_networks_allowed" boolean DEFAULT false NOT NULL;

packages/database/drizzle/meta/_journal.json

@@ -29,6 +29,13 @@
       "when": 1785625186545,
       "tag": "0003_smiling_silver_samurai",
       "breakpoints": true
+    },
+    {
+      "idx": 4,
+      "version": "7",
+      "when": 1785678753029,
+      "tag": "0004_zippy_silver_centurion",
+      "breakpoints": true
     }
   ]
 }

packages/database/src/schema.ts

@@ -70,6 +70,7 @@ export const groups = pgTable(
     slug: varchar("slug", { length: 50 }).notNull(),
     description: text("description"),
     accessEnabled: boolean("access_enabled").notNull().default(false),
+    anonymizedNetworksAllowed: boolean("anonymized_networks_allowed").notNull().default(false),
     isDefault: boolean("is_default").notNull().default(false),
     ...timestamps(),
   },
@@ -171,6 +172,12 @@ export const appSettings = pgTable("app_settings", {
   registrationMessage: text("registration_message")
     .notNull()
     .default("Please register your Minecraft account before joining."),
+  groupAccessDeniedMessage: text("group_access_denied_message")
+    .notNull()
+    .default("Your account group does not currently have server access. Contact a host if you believe this is a mistake."),
+  vpnDeniedMessage: text("vpn_denied_message")
+    .notNull()
+    .default("VPN, proxy, and Tor connections are not allowed. Contact a host to request an exception."),
   ...timestamps(),
 });
 

packages/network/src/index.ts

@@ -51,7 +51,9 @@ function numberValue(value: unknown) {
 }
 
 function proxyClassification(proxy: unknown, type: unknown): IpClassification {
-  if (String(proxy).toLowerCase() !== "yes") return "clear";
+  const normalizedProxy = String(proxy).toLowerCase();
+  if (normalizedProxy === "no") return "clear";
+  if (normalizedProxy !== "yes") return "unknown";
   const normalizedType = String(type ?? "").toLowerCase();
   if (normalizedType.includes("tor")) return "tor";
   if (normalizedType.includes("vpn")) return "vpn";

packages/network/test/proxycheck.test.ts

@@ -50,6 +50,14 @@ describe("ProxyCheck.io intelligence", () => {
     );
   });
 
+  it("treats missing or malformed proxy signals as unknown", async () => {
+    for (const proxy of [undefined, null, "maybe"] as const) {
+      const request = vi.fn<typeof fetch>().mockResolvedValue(response({ proxy, type: "Residential" }));
+      await expect(new ProxyCheckProvider({ apiKey: "secret", request }).classify(ipAddress))
+        .resolves.toMatchObject({ classification: "unknown", network: { proxy: null } });
+    }
+  });
+
   it("maps VPN and Tor responses to explicit classifications", async () => {
     const vpnRequest = vi.fn<typeof fetch>().mockResolvedValue(response({ proxy: "yes", type: "VPN" }));
     const torRequest = vi.fn<typeof fetch>().mockResolvedValue(response({ proxy: "yes", type: "TOR" }));

plugins/velocity/README.md

@@ -1,6 +1,6 @@
 # Velocity admission plugin
 
-The plugin checks every online-mode Java login against the account-manager API. It fails closed: unavailable, unauthorized, stale, replayed, malformed, and unknown requests are denied. After a player completes proxy login, the plugin sends best-effort `PostLoginEvent` telemetry used for confirmed-connection activity metrics; reporting failure is logged without disconnecting the player.
+The plugin checks every online-mode Java login against the account-manager API. It fails closed: unavailable, unauthorized, stale, replayed, malformed, unknown-account, group-disabled, and group-policy VPN/proxy/Tor requests are denied. After a player completes proxy login, the plugin sends best-effort `PostLoginEvent` telemetry used for confirmed-connection activity metrics; reporting failure is logged without disconnecting the player.
 
 ## Download or build
 
@@ -31,4 +31,4 @@ npm run plugin:create-credential --workspace @minecraft-account-manager/database
 
 Copy the displayed token into the plugin's `api-token`. Configure the HTTPS account-manager URL and ensure `server-id` matches. Restrict access to the plugin configuration because it contains the bearer token, then restart Velocity.
 
-The proxy must run in online mode. Unknown players and API failures receive the configured registration message.
+The proxy must run in online mode. Unknown players, disabled groups, and disallowed VPN/proxy/Tor connections receive their operator-configured API message. API failures receive the plugin's local registration fallback.