AI agents use hosts_bulk_set_port to create or update resources in Remnawave — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Remnawave environment.
This tool modifies host configurations (ports) across multiple hosts simultaneously, which is a Write operation that changes system state reversibly. The high severity reflects that bulk port changes on VPN infrastructure could disrupt service availability or routing if misconfigured by an AI agent, affecting multiple systems at once.
From the tool's definition Tool name 'hosts_bulk_set_port' and description 'Bulk set port for selected hosts' indicate modification of host configurations in bulk.
Documented attack patterns abuse exactly the kind of access hosts_bulk_set_port gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Remnawave, and nothing reaches the server without passing your rules. This is the rule we recommend for hosts_bulk_set_port:
{
"version": "1",
"default": "deny",
"tools": {
"hosts_bulk_set_port": {
"limits": [
{
"counter": "hosts_bulk_set_port_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}hosts_bulk_set_port 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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Bulk set port for selected hosts. It is categorised as a Write tool in the Remnawave MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Remnawave MCP server in PolicyLayer and add a rule for hosts_bulk_set_port: 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 Remnawave. Nothing to install.
hosts_bulk_set_port 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 hosts_bulk_set_port 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 hosts_bulk_set_port. 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.
hosts_bulk_set_port is provided by the Remnawave MCP server (trackline/mcp-remnawave). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 153 Remnawave tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
153 Remnawave tools catalogued and risk-classified — across an index of 42,500+ MCP servers.