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REMnux MCP Server

Official

Enables AI assistants to execute malware analysis tools on a REMnux system via Docker, SSH, or local...

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Updated Feb 3, 2026
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Enables AI assistants to execute malware analysis tools on a REMnux system via Docker, SSH, or local connections. It provides automated file-type analysis, structured tool discovery, and security guardrails for streamlined malware investigation.

  1. Click the "Install Now" button in the FastMCP connection interface to open the environment-variable / connection fields.

  2. Generate a strong HTTP bearer token (used by the REMnux MCP server as MCP_TOKEN).

    • Linux / macOS (openssl):
      openssl rand -hex 32
    • Python (any OS with Python):
      python -c "import secrets; print(secrets.token_hex(32))"
    • PowerShell (Windows):
      python -c "import secrets; print(secrets.token_hex(32))"
      Copy the generated hex string (32 bytes => 64 hex chars).

  3. In the FastMCP "Install Now" env list, add the server env:

    • Key: MCP_TOKEN
    • Value: (paste the generated token)

  4. If FastMCP has a place to provide request headers for the client connection, add the HTTP Authorization header so clients will authenticate:

    • Header name: Authorization
    • Header value: Bearer

  5. If you will run the MCP server with CLI flags instead of relying on the env, put the token into the server startup args (FastMCP "args" or command-line field) instead of/in addition to the env:

    • Example flag: --http-token
    • Or set MCP_TOKEN in the env and start without the flag (preferred to avoid exposing token in process listings).

  6. (Optional) If exposing the server on the network, set the host/port values in FastMCP or server args:

    • Example args: --transport=http --http-host=0.0.0.0 --http-port=3000
    • These are CLI flags, not required envs — set them in FastMCP's args/command fields if present.

  7. Save the FastMCP configuration (Install Now) and start the connection/server via FastMCP.

  8. Test the token from the client side (replace HOST:PORT and TOKEN):

    • curl -H "Authorization: Bearer " http://HOST:3000/mcp (verify you get a valid MCP handshake/response)

  9. Secure the token:

    • Store it in a secrets manager or password manager.
    • Rotate it if it is accidentally exposed (generate a new token and update the MCP_TOKEN value in FastMCP).

  10. For SSH or Docker deployment modes (no HTTP transport) you do not need MCP_TOKEN; instead collect these values and enter them in FastMCP fields as needed:

  • Docker container name: run docker ps on the REMnux host to confirm (default: remnux) and place that value in FastMCP container/args.
    - SSH host/user: the REMnux VM IP and user (default user: remnux). Provide SSH password or use SSH agent in FastMCP's connection fields.

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