Apply a Wireshark display filter to a locally synced PCAP and return only matching packets as structured JSON. Useful for drilling into specific traffic patterns during troubleshooting. Supports all standard Wireshark filter expressions. Examples:
AI agents call wireshark_display_filter 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.
This tool performs read-only analysis on pre-captured network traffic. It retrieves and queries packet data based on filter criteria without any side effects, data modification, or destructive operations. The stateless design and PCAP synchronization from GitHub further confirm that this is a passive analysis tool. Display filtering is a fundamental Wireshark feature for data inspection, not manipulation.
From the tool's definition Tool applies a display filter to a PCAP file and returns matching packets as structured JSON. The description states it is 'useful for drilling into specific traffic patterns' and explicitly supports 'standard Wireshark filter expressions' for analysis.
Attacks that exploit this kind of access
Apply a Wireshark display filter to a locally synced PCAP and return only matching packets as structured JSON. Useful for drilling into specific traffic patterns during troubleshooting. Supports all standard Wireshark filter expressions. Examples:. 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 wireshark_display_filter: 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.
wireshark_display_filter 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 wireshark_display_filter 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 wireshark_display_filter. 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.
wireshark_display_filter is provided by the Wireshark MCP Server MCP server (presidio-federal/wireshark-mcp-container). 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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