OPEN PORT CHECKER
Free utility to check the port status of a given hostname or IP address
Port | Service |
---|---|
21 | FTP (File TransportToLink Protocol) - file storage and retrieval |
22 | SSH, SFTP - secure shell and SSH based FTP |
23 | Telnet - non-secure shell |
25 | SMTP (Simple Mail Transfer Protocol) - sending and receiving email messages |
53 | DNS (Domain Name System) - mapping from hostname to ip and vice versa |
80 | HTTP (HyperText Transfer Protocol) - main protocol of world wide web |
443 | HTTPS - TLS/SSL (Transport Layer Security) |
143 | IMAP (Internet Message Access Protocol) - mail retrieval protocol |
3306 | MySQL database |
3389 | RDP - Remote Desktop |
1433 | MSSQL database |