AI agents use system_dns_update to create or update resources in FortiOS 7 6 X MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your FortiOS 7 6 X MCP Server environment.
This tool modifies DNS configuration, which is a critical network service. While reversible (Write category rather than Destructive), misuse could redirect all DNS traffic or cause widespread network disruption. The lack of description reduces confidence slightly, but the semantic meaning of 'system_dns_update' is clear.
From the tool's definition Tool name 'system_dns_update' indicates modification of DNS system configuration. The 'update' verb combined with 'system_dns' scope suggests reversible changes to DNS settings, a core network infrastructure component.
Risk signalsAdmin/system-level operation
Documented attack patterns abuse exactly the kind of access system_dns_update gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and FortiOS 7 6 X MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for system_dns_update:
{
"version": "1",
"default": "deny",
"tools": {
"system_dns_update": {
"limits": [
{
"counter": "system_dns_update_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}system_dns_update 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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system_dns_update. It is categorised as a Write tool in the FortiOS 7 6 X MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the FortiOS 7 6 X MCP Server MCP server in PolicyLayer and add a rule for system_dns_update: 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 FortiOS 7 6 X MCP Server. Nothing to install.
system_dns_update 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 system_dns_update 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 system_dns_update. 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.
system_dns_update is provided by the FortiOS 7 6 X MCP Server MCP server (paoloamato2/fortinet-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from FortiOS 7 6 X 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.
240 FortiOS 7 6 X MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.