🚪 Common Network Ports
Reference guide for well-known TCP/UDP ports and their services.
| Port | Protocol | Service | Description |
|---|---|---|---|
| 20 | TCP | FTP Data | File Transfer Protocol data channel |
| 21 | TCP | FTP Control | File Transfer Protocol command channel |
| 22 | TCP | SSH | Secure Shell remote access |
| 23 | TCP | Telnet | Unencrypted remote access (deprecated) |
| 25 | TCP | SMTP | Simple Mail Transfer Protocol |
| 53 | TCP/UDP | DNS | Domain Name System |
| 67 | UDP | DHCP Server | Dynamic Host Configuration Protocol |
| 68 | UDP | DHCP Client | DHCP client requests |
| 80 | TCP | HTTP | Hypertext Transfer Protocol |
| 110 | TCP | POP3 | Post Office Protocol v3 |
| 123 | UDP | NTP | Network Time Protocol |
| 143 | TCP | IMAP | Internet Message Access Protocol |
| 161 | UDP | SNMP | Simple Network Management Protocol |
| 194 | TCP | IRC | Internet Relay Chat |
| 443 | TCP | HTTPS | HTTP over TLS/SSL |
| 465 | TCP | SMTPS | SMTP over SSL |
| 514 | UDP | Syslog | System logging |
| 587 | TCP | SMTP Submission | Email submission (STARTTLS) |
| 993 | TCP | IMAPS | IMAP over SSL |
| 995 | TCP | POP3S | POP3 over SSL |
| 1433 | TCP | MSSQL | Microsoft SQL Server |
| 1521 | TCP | Oracle DB | Oracle Database listener |
| 3306 | TCP | MySQL | MySQL/MariaDB database |
| 3389 | TCP | RDP | Remote Desktop Protocol |
| 5432 | TCP | PostgreSQL | PostgreSQL database |
| 5900 | TCP | VNC | Virtual Network Computing |
| 6379 | TCP | Redis | Redis in-memory data store |
| 8080 | TCP | HTTP Alt | Alternative HTTP port |
| 8443 | TCP | HTTPS Alt | Alternative HTTPS port |
| 27017 | TCP | MongoDB | MongoDB database |