Why Check Open Ports?

A port checker is a network utility used by system administrators and developers to determine if a specific port on a server or a router is open and listening for incoming connections. If you are setting up remote administration tools, configuring a game server, or auditing firewall rules, ensuring your ports are correctly exposed (or blocked) is step one of network security.

Common Remote Administration Ports

Port 22 (SSH): Used for secure shell, command-line remote administration.
Port 80 / 443 (HTTP/HTTPS): Standard ports for web traffic and web-based server dashboards.
Port 3389 (RDP): Microsoft's Remote Desktop Protocol for visual remote access.
Port 21 (FTP): File transfer protocol, generally used for remote file management.