proxychains_dns · Proxychains MCP Server MCP: Risk & Policy

WHAT IT DOES

What proxychains_dns does on Proxychains MCP Server

AI agents use proxychains_dns to create or update resources in Proxychains MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Proxychains MCP Server environment.

WHY IT NEEDS A POLICY

Why proxychains_dns needs a policy

This tool modifies DNS handling configuration rather than merely reading it, making it a Write operation. It changes how DNS queries are routed through proxies. Severity is medium because misconfiguration could disrupt network connectivity or enable unintended traffic patterns, but it is reversible and does not directly execute arbitrary commands, destroy data, or move money.

From the tool's definition Tool name 'proxychains_dns' and description 'Configure DNS handling' with options like 'proxy_dns', 'proxy_dns_old', 'proxy_dns_daemon', and 'none' indicate this modifies DNS configuration settings on the remote host.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

proxychains_dns Rate-limited

proxychains_dns stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "proxychains_dns": {
      "limits": [
        {
          "counter": "proxychains_dns_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Proxychains MCP Server, so you can run agents against it safely.

FAQ

Questions about proxychains_dns

What does the proxychains_dns tool do? +

Configure DNS handling. proxy_dns (recommended): DNS through proxy. proxy_dns_old: legacy mode. proxy_dns_daemon: daemon mode. none: no DNS proxying. It is categorised as a Write tool in the Proxychains MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on proxychains_dns? +

Register the Proxychains MCP Server MCP server in PolicyLayer and add a rule for proxychains_dns: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Proxychains MCP Server. Nothing to install.

What risk level is proxychains_dns? +

proxychains_dns is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit proxychains_dns? +

Yes. Add a rate_limit block to the proxychains_dns rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block proxychains_dns completely? +

Set action: deny in the PolicyLayer policy for proxychains_dns. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides proxychains_dns? +

proxychains_dns is provided by the Proxychains MCP Server MCP server (schwarztim/sec-proxychains-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.