Follow and reconstruct a TCP, UDP, or HTTP stream from a pcap file. Shows the full conversation.
AI agents call tshark_follow_stream 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.
Although this tool can expose sensitive data (credentials, API keys, personal information) within captured network streams—making the severity high—the operation itself is read-only: it queries and reconstructs data from an already-captured pcap file without altering it.
From the tool's definition Tool description states it 'Follow and reconstruct a TCP, UDP, or HTTP stream from a pcap file. Shows the full conversation.' The action is to retrieve and display existing network stream data with no modification or deletion.
Attacks that exploit this kind of access
Follow and reconstruct a TCP, UDP, or HTTP stream from a pcap file. Shows the full conversation. 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 tshark_follow_stream: 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.
tshark_follow_stream 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 tshark_follow_stream 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 tshark_follow_stream. 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.
tshark_follow_stream is provided by the Wireshark MCP Server MCP server (schwarztim/sec-wireshark-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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