AI agents invoke capture_live_traffic to trigger actions in Wireshark MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
Based on the tool name and server context (Wireshark network analysis), this tool likely initiates a live packet capture on a network interface, which is an external operation with real-world effects — intercepting network traffic. This is an Execute-category action. Severity is high because misuse could capture sensitive credentials, PII, or confidential communications from live network traffic.
From the tool's definition Tool name 'capture_live_traffic' implies active network interface interaction; description is empty and uninformative.
Documented attack patterns abuse exactly the kind of access capture_live_traffic gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Wireshark MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for capture_live_traffic:
{
"version": "1",
"default": "deny",
"tools": {
"capture_live_traffic": {
"limits": [
{
"counter": "capture_live_traffic_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}capture_live_traffic stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
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capture_live_traffic. It is categorised as a Execute tool in the Wireshark MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Wireshark MCP server in PolicyLayer and add a rule for capture_live_traffic: 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 Wireshark MCP. Nothing to install.
capture_live_traffic is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the capture_live_traffic 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.
Set action: deny in the PolicyLayer policy for capture_live_traffic. 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.
capture_live_traffic is provided by the Wireshark MCP server (sarthaksiddha/wireshark-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Wireshark MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
3 Wireshark MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.