// tool reference · Network & Firewall
Port Reference Free
Look up what a port is for and the risk of exposing it.
What it does
Explains what a port carries and what exposing it means. Reference and analysis — this does NOT scan a remote host, in line with the platform's defensive-only boundary.
When to use it
- Interpreting a firewall rule or a netstat output.
Inputs
Field names are the actual form parameters, verified against source.
| Field | Type | Required | Notes |
|---|---|---|---|
| (port / service) | text | required | Port number or service name. |
What you get back
Service, typical use, and exposure risk.
Worked example
Input
6379
Output (abridged)
6379/tcp -- Redis RISK IF EXPOSED: CRITICAL Redis ships with NO authentication by default. An exposed instance is not 'a database with a weak password' -- it is an open, shell-adjacent service. CONFIG SET has been used to write SSH keys and cron entries. Should face the internet: NEVER. Correct posture: bind 127.0.0.1, set requirepass, rename or disable CONFIG in production. This is reference and risk analysis. It does not scan a host -- that would be an offensive capability, which is outside this platform.
How it works
Deterministic reference lookup. No remote scanning is performed.
Limits
Read live from the platform configuration.
| Rate limit | 30 requests / 60s (platform default) |
Limitations — what it does not do
Reference only -- it does NOT scan a remote host. That is deliberate: remote scanning is an offensive capability and sits outside the platform's defensive-only boundary. Use the Firewall Rule Analyzer to see what your rules permit.
Privacy
Nothing is stored.
Standards
IANA port registry