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<h1>Security &amp; threat model</h1>
<p class="docs-lead">
Audience: operators deploying PearDock in multi-operator or semi-trusted environments.
Scope: HyperDHT P2P control plane + local Docker Engine socket.
</p>
<h2>1. Assets</h2>
<div class="table-wrap">
<table>
<thead>
<tr><th>Asset</th><th>Sensitivity</th></tr>
</thead>
<tbody>
<tr><td><code>SERVER_SEED</code></td><td>Critical: identity and vault key derivation</td></tr>
<tr><td>Docker socket access</td><td>Critical: full host container control</td></tr>
<tr><td>Registry passwords (vault)</td><td>High: encrypted at rest</td></tr>
<tr><td>Peer invite tokens</td><td>Medium: short-lived capabilities</td></tr>
<tr><td>Audit log</td><td>Medium: forensic integrity</td></tr>
<tr><td>Container data / env secrets</td><td>High: via inspect, logs, exec</td></tr>
</tbody>
</table>
</div>
<h2>2. Trust boundaries</h2>
<pre><code>[Client] --Noise/HyperDHT--> [peardock server] --unix socket--> [dockerd]
|
+-- peardock-vault.json (AES-GCM)
+-- peardock-peers.json
+-- peardock-audit.log</code></pre>
<ul>
<li><strong>Anyone with the server public key</strong> can attempt a DHT connection.</li>
<li><strong>Default role is admin</strong> unless default role / admin keys / peer policy tighten it.</li>
<li>Swarm / plugins are off unless feature flags enable them.</li>
<li>Holesail tunnels are on by default. Each <code>hs://</code> URL is a port capability.</li>
<li>Host FS browse is default-deny unless browse roots / open mode are set.</li>
</ul>
<h2>3. Adversaries</h2>
<ol>
<li><strong>Remote peer with public key only:</strong> should not get Docker control if allowlist and non-admin default are set.</li>
<li><strong>Stolen invite token:</strong> limited by TTL and max uses. Rotate after use.</li>
<li><strong>Compromised client:</strong> can use any role the peer holds until revoke.</li>
<li><strong>Local host attacker with filesystem:</strong> can steal seed and vault if file perms are wrong.</li>
<li><strong>Malicious container:</strong> out of scope for PearDock. Engine isolation applies.</li>
</ol>
<h2>4. Controls (implemented)</h2>
<div class="table-wrap">
<table>
<thead>
<tr><th>Control</th><th>Mechanism</th></tr>
</thead>
<tbody>
<tr><td>Transport E2E</td><td>HyperDHT Noise</td></tr>
<tr><td>Capability ACL</td><td>viewer / operator / admin + MethodRoles</td></tr>
<tr><td>Peer policy</td><td>Invite, register, revoke, optional allowlist</td></tr>
<tr><td>Audit</td><td>Append-only log for privileged methods</td></tr>
<tr><td>Rate limit</td><td>Per-peer limiter on RPC</td></tr>
<tr><td>Registry secrets</td><td>AES-256-GCM vault</td></tr>
<tr><td>Browse FS</td><td>Root allowlist / default deny</td></tr>
<tr><td>Tunnel targets</td><td>Loopback / allowlisted hosts only</td></tr>
</tbody>
</table>
</div>
<h2>5. Residual risks</h2>
<ul>
<li><strong>Default admin</strong> is intentional for single-operator setup. Change it for multi-tenant fleets.</li>
<li>Binary image/export streams are size-capped but still large; DoS via memory if many concurrent transfers.</li>
<li>JSON-over-RPC relies on handler validation (not full hyperschema end-to-end).</li>
<li>Swarm secrets/configs once enabled are highly privileged.</li>
</ul>
<h2>6. Operator hardening checklist</h2>
<ul>
<li>Generate unique <code>SERVER_SEED</code>; back up offline; never commit <code>.env</code></li>
<li>Set <code>PEARDOCK_DEFAULT_ROLE=viewer</code> or <code>operator</code></li>
<li>Set <code>PEARDOCK_ADMIN_KEYS=&lt;your client public key hex&gt;</code></li>
<li>Enable <code>PEARDOCK_PEER_ALLOWLIST=1</code> after registering operators</li>
<li>Set <code>PEARDOCK_BROWSE_ROOTS</code> only if host path pickers are needed</li>
<li>Enable <code>PEARDOCK_AUDIT=1</code></li>
<li>Treat <code>hs://</code> tunnel URLs as secrets; set <code>ENABLE_HOLESAIL=0</code> if unused</li>
<li>Restrict filesystem permissions on vault, peers, and seed files</li>
</ul>
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<a href="/docs/holesail"><span>Previous</span><strong>← Holesail</strong></a>
<a class="next" href="/docs/api"><span>Next</span><strong>RPC &amp; API →</strong></a>
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