AI agents call list_tcp_streams to retrieve information from Wireshark MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to list/enumerate TCP streams, which is a read operation that retrieves network metadata. While the description is empty (lowering confidence slightly), the name and context of sibling analysis tools strongly suggest this is a querying/enumeration function.
From the tool's definition Tool named 'list_tcp_streams' with no description provided. Based on naming convention and sibling tools (follow_tcp_stream, analyze_pcap_file, capture_live_packets), this tool retrieves or enumerates TCP stream information from network captures without…
Documented attack patterns abuse exactly the kind of access list_tcp_streams gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Wireshark MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_tcp_streams:
{
"version": "1",
"default": "deny",
"tools": {
"list_tcp_streams": {}
}
}list_tcp_streams is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
list_tcp_streams. It is categorised as a Read tool in the Wireshark MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Wireshark MCP Server MCP server in PolicyLayer and add a rule for list_tcp_streams: 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 Server. Nothing to install.
list_tcp_streams is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_tcp_streams 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 list_tcp_streams. 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.
list_tcp_streams is provided by the Wireshark MCP Server MCP server (mixelpixx/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 Server, 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.
19 Wireshark MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.