OPNsense MCP server

This is a helper that connects your AI assistant to your OPNsense firewall. Instead of logging into the firewall yourself and clicking around, you just ask a question in plain words and the AI looks it up for you. It is handy for anyone who runs a home lab or looks after a small office network.

What this MCP server does

You ask your AI something about your firewall, like what devices are on the network or what got blocked today. The AI passes that request to this helper program. The helper talks to your OPNsense firewall over its API, which is just a way for programs to ask the firewall questions. The firewall sends back the data, and the AI turns it into a clear answer for you. For rule changes, the helper can also tell the firewall to add, edit, turn on or off, or remove a rule.

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What you can do with it

• See which devices are on your network right now
• Check DHCP leases to find which device has which address
• Read recent firewall logs and see what was blocked
• List your firewall rules and their current state
• Add, edit, turn on or off, or remove a firewall rule
• Check system status and interface information
• Capture packets from traffic you want to inspect

Try asking your AI

• “What's happening on my network right now?”
• “Show me the latest firewall blocks from the last hour.”
• “Tell me about the host at 192.168.1.42.”
• “Capture packets from the suspicious traffic on the WAN interface.”

What it gives back to you

You get answers in the chat, in plain language. That might be a list of devices, a summary of recent blocks, the details of a rule, or the status of an interface. If you asked for a packet capture, you get the capture data back. If you asked it to change a rule, it tells you what it changed.

Before you start

Who it's for

Home lab owners, small office admins, and IT or security people who look after an OPNsense firewall and want quick answers without logging in.