Unassign an IPsec tunnel template from a device.
AI agents use unassign_ipsec_template to create or update resources in Fortimanager — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Fortimanager environment.
Unassigning an IPsec tunnel template modifies the device's configuration by removing the template association. This is a reversible write operation (the template can be reassigned), but carries high severity because removing IPsec tunnel configuration from a network device can disrupt VPN connectivity and impact network security posture.
From the tool's definition Unassign an IPsec tunnel template from a device
Documented attack patterns abuse exactly the kind of access unassign_ipsec_template gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Fortimanager, and nothing reaches the server without passing your rules. This is the rule we recommend for unassign_ipsec_template:
{
"version": "1",
"default": "deny",
"tools": {
"unassign_ipsec_template": {
"limits": [
{
"counter": "unassign_ipsec_template_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}unassign_ipsec_template stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Unassign an IPsec tunnel template from a device. It is categorised as a Write tool in the Fortimanager MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Fortimanager MCP server in PolicyLayer and add a rule for unassign_ipsec_template: 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 Fortimanager. Nothing to install.
unassign_ipsec_template is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the unassign_ipsec_template 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 unassign_ipsec_template. 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.
unassign_ipsec_template is provided by the Fortimanager MCP server (jmpijll/fortimanager-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Fortimanager, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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