TCP / UDP Port Reference
Searchable reference of well-known and commonly-used network ports.
Well-known (0–1023)
| 7 | TCP/UDP | Echo — Echo back what's sent |
| 20 | TCP | FTP-data — FTP data channel |
| 21 | TCP | FTP — File Transfer Protocol control |
| 22 | TCP | SSH — Secure Shell |
| 23 | TCP | Telnet — Unencrypted remote login (don't use) |
| 25 | TCP | SMTP — Simple Mail Transfer Protocol |
| 53 | TCP/UDP | DNS — Domain Name System |
| 67 | UDP | DHCP server — Dynamic Host Configuration |
| 68 | UDP | DHCP client — Dynamic Host Configuration |
| 69 | UDP | TFTP — Trivial File Transfer Protocol |
| 80 | TCP | HTTP — Hypertext Transfer Protocol |
| 88 | TCP/UDP | Kerberos — Kerberos authentication |
| 110 | TCP | POP3 — Post Office Protocol v3 |
| 119 | TCP | NNTP — Network News Transfer Protocol |
| 123 | UDP | NTP — Network Time Protocol |
| 135 | TCP | MS RPC — Microsoft Endpoint Mapper / RPC |
| 137 | UDP | NetBIOS Name — NetBIOS name service |
| 139 | TCP | NetBIOS SSN — NetBIOS session |
| 143 | TCP | IMAP — Internet Message Access Protocol |
| 161 | UDP | SNMP — Simple Network Management Protocol |
| 162 | UDP | SNMP-trap — SNMP traps |
| 179 | TCP | BGP — Border Gateway Protocol |
| 194 | TCP | IRC — Internet Relay Chat |
| 389 | TCP | LDAP — Lightweight Directory Access Protocol |
| 443 | TCP | HTTPS — HTTP over TLS |
| 445 | TCP | SMB — Microsoft-DS / SMB over TCP |
| 465 | TCP | SMTPS — SMTP over TLS (legacy submission) |
| 514 | UDP | syslog — System log forwarding |
| 515 | TCP | LPD — Line Printer Daemon |
| 587 | TCP | SMTP submission — Authenticated mail submission |
| 631 | TCP/UDP | IPP — Internet Printing Protocol / CUPS |
| 636 | TCP | LDAPS — LDAP over TLS |
| 873 | TCP | rsync — rsync protocol |
| 989 | TCP | FTPS-data — FTP over TLS data |
| 990 | TCP | FTPS — FTP over TLS control |
| 993 | TCP | IMAPS — IMAP over TLS |
| 995 | TCP | POP3S — POP3 over TLS |
Registered (1024–49151)
| 1080 | TCP | SOCKS — SOCKS proxy |
| 1194 | UDP | OpenVPN — OpenVPN default |
| 1433 | TCP | MS SQL Server — Microsoft SQL Server |
| 1434 | UDP | MS SQL Browser — SQL Server browser |
| 1521 | TCP | Oracle DB — Oracle Database listener |
| 1701 | UDP | L2TP — Layer 2 Tunneling Protocol |
| 1723 | TCP | PPTP — Point-to-Point Tunneling |
| 1812 | UDP | RADIUS auth — RADIUS authentication |
| 1813 | UDP | RADIUS acct — RADIUS accounting |
| 2049 | TCP | NFS — Network File System |
| 2375 | TCP | Docker API — Docker daemon, unencrypted |
| 2376 | TCP | Docker API (TLS) — Docker daemon over TLS |
| 3000 | TCP | Node / dev servers — Common dev port (Next.js, Express defaults) |
| 3306 | TCP | MySQL — MySQL / MariaDB |
| 3389 | TCP | RDP — Remote Desktop Protocol |
| 4369 | TCP | EPMD — Erlang Port Mapper |
| 5060 | TCP/UDP | SIP — Session Initiation Protocol |
| 5061 | TCP | SIPS — SIP over TLS |
| 5353 | UDP | mDNS — Multicast DNS / Bonjour |
| 5432 | TCP | PostgreSQL — PostgreSQL |
| 5672 | TCP | AMQP — RabbitMQ / AMQP |
| 5900 | TCP | VNC — Remote framebuffer / VNC |
| 5984 | TCP | CouchDB — Apache CouchDB |
| 6379 | TCP | Redis — Redis |
| 8000 | TCP | HTTP alt — Common dev port (Django, Python http.server) |
| 8080 | TCP | HTTP alt — Common HTTP alternate / proxies |
| 8443 | TCP | HTTPS alt — Common HTTPS alternate |
| 8888 | TCP | Jupyter / proxies — Jupyter Notebook default; HTTP proxies |
| 9000 | TCP | php-fpm / SonarQube / Portainer — Multiple common services |
| 9090 | TCP | Prometheus — Prometheus default |
| 9100 | TCP | node_exporter — Prometheus node_exporter |
| 9200 | TCP | Elasticsearch — Elasticsearch HTTP |
| 9300 | TCP | Elasticsearch (transport) — Elasticsearch node-to-node |
| 9418 | TCP | git — Git protocol |
| 11211 | TCP/UDP | Memcached — Memcached |
| 27017 | TCP | MongoDB — MongoDB |
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