This record as markdown: /tools/tjnull-ludus-fastmcp/setup-sdn.md
What setup_sdn does on Ludus FastMCP
AI agents invoke setup_sdn to trigger actions in Ludus FastMCP. 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.
Why setup_sdn is rated High
Setting up SDN (Software-Defined Networking) infrastructure involves provisioning and configuring network components, which constitutes executing an external operation with significant environmental impact. It is not merely reading or writing data, but actively configuring network infrastructure. While not inherently destructive or financial, misconfiguration or misuse could disrupt the entire range network topology.
From the tool's definition 'Setup SDN infrastructure' - configuring Software-Defined Networking infrastructure is an operational action that triggers external configuration and network topology changes in the cyber range environment
Attacks that exploit this kind of access
The rule that runs setup_sdn safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Ludus FastMCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For setup_sdn, this is the rule to start with:
setup_sdn 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Ludus FastMCP, apply this rule, and every setup_sdn call is checked against it from then on.
Questions about setup_sdn
Setup SDN infrastructure. It is categorised as a Execute tool in the Ludus FastMCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Ludus Fast MCP server in PolicyLayer and add a rule for setup_sdn: 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 Ludus FastMCP. Nothing to install.
setup_sdn 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 setup_sdn 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 setup_sdn. 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.
setup_sdn is provided by the Ludus Fast MCP server (tjnull/ludus-fastmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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