// Tool_07
Port Reference Guide
A searchable reference of common network ports — their protocol, the service
that typically uses them, and a general risk level if left exposed to the internet.
All Risk Levels
Low Risk
Medium Risk
High Risk
— ports
| Port |
Protocol |
Service |
Risk Level |
Low — standard, generally safe when properly configured
Medium — should be firewalled/restricted, common attack target
High — frequently exploited, should rarely face the public internet