TCP/UDP Port Reference Table
Quick reference for the most commonly used network ports, with number, protocol, service name, and description. Use the search field to filter.
| Port | Protocol | Service | Description |
|---|---|---|---|
| 20 | TCP | FTP Data | FTP data transfer |
| 21 | TCP | FTP Control | FTP connection control |
| 22 | TCP | SSH | Secure Shell — encrypted remote access |
| 23 | TCP | Telnet | Unencrypted remote access |
| 25 | TCP | SMTP | Email sending (Simple Mail Transfer Protocol) |
| 53 | TCP/UDP | DNS | Domain name resolution |
| 67 | UDP | DHCP Server | DHCP server — IP address assignment |
| 68 | UDP | DHCP Client | DHCP client |
| 69 | UDP | TFTP | Trivial File Transfer Protocol |
| 80 | TCP | HTTP | Web — unencrypted traffic |
| 110 | TCP | POP3 | Email retrieval (Post Office Protocol) |
| 119 | TCP | NNTP | Network News Transfer Protocol |
| 123 | UDP | NTP | Clock synchronization (Network Time Protocol) |
| 135 | TCP | MS RPC | Microsoft Remote Procedure Call |
| 137-139 | TCP/UDP | NetBIOS | NetBIOS network services (Windows) |
| 143 | TCP | IMAP | Email access (Internet Message Access Protocol) |
| 161 | UDP | SNMP | Network management (Simple Network Management Protocol) |
| 162 | UDP | SNMP Trap | SNMP notifications |
| 179 | TCP | BGP | Border Gateway Protocol — inter-AS routing |
| 194 | TCP | IRC | Internet Relay Chat |
| 389 | TCP/UDP | LDAP | Lightweight Directory Access Protocol |
| 443 | TCP | HTTPS | Web — encrypted traffic (TLS/SSL) |
| 445 | TCP | SMB | Windows file sharing (Server Message Block) |
| 465 | TCP | SMTPS | SMTP over SSL (secure email sending) |
| 514 | UDP | Syslog | System event logging |
| 587 | TCP | SMTP Submission | Email sending (recommended submission port) |
| 636 | TCP | LDAPS | LDAP over SSL |
| 993 | TCP | IMAPS | IMAP over SSL |
| 995 | TCP | POP3S | POP3 over SSL |
| 1080 | TCP | SOCKS | SOCKS proxy |
| 1433 | TCP | MS SQL | Microsoft SQL Server |
| 1434 | UDP | MS SQL Monitor | SQL Server Browser Service |
| 1521 | TCP | Oracle DB | Oracle Database |
| 1723 | TCP | PPTP | VPN Point-to-Point Tunneling Protocol |
| 2049 | TCP/UDP | NFS | Network File System |
| 3306 | TCP | MySQL | MySQL / MariaDB database |
| 3389 | TCP | RDP | Remote Desktop Protocol (Windows) |
| 5060 | TCP/UDP | SIP | Session Initiation Protocol (VoIP) |
| 5432 | TCP | PostgreSQL | PostgreSQL database |
| 5900 | TCP | VNC | Virtual Network Computing (remote access) |
| 6379 | TCP | Redis | Redis in-memory database |
| 8080 | TCP | HTTP Alt | Alternative HTTP — proxies and dev servers |
| 8443 | TCP | HTTPS Alt | Alternative HTTPS |
| 9090 | TCP | Web Management | Web management panels |
| 27017 | TCP | MongoDB | MongoDB database |