Verify open ports and confirm service reachability.
Test if a specific TCP port is open and reachable on a remote host. Useful for verifying firewall rules, checking service availability, or confirming that your VPS is listening on the expected ports.
Port Checker
/tools/port-checker
How It Works
Our server attempts a TCP connection to the specified host and port with a 5-second timeout. If the connection succeeds, the port is reported as open along with the response time. Private and reserved IP addresses are blocked for security.
An open port means a service is listening and accepting TCP connections on that port number. A closed port means no service responded within the timeout.
This tool checks TCP ports only. UDP port checking requires a different protocol and is less reliable from a remote scan.
Check that the service is running, the firewall (iptables/ufw) allows the port, and your hosting provider does not have additional network filtering.