Port numbers
Well-known network ports with protocol and service.
IANA · 80 entries
- 20FTP (data transfer)
- 21FTP (control)
- 22SSH — secure shell, SFTP and port forwarding
- 23Telnet (unencrypted remote login, legacy)
- 25SMTP — mail transfer between servers
- 53DNS — domain name resolution
- 67DHCP server
- 68DHCP client
- 69TFTP — trivial file transfer
- 80HTTP — unencrypted web traffic
- 110POP3 — mail retrieval
- 119NNTP — Usenet news
- 123NTP — network time synchronization
- 135Microsoft RPC endpoint mapper
- 137NetBIOS name service
- 139NetBIOS session service
- 143IMAP — mail access
- 161SNMP — network monitoring
- 162SNMP traps
- 179BGP — border gateway protocol routing
- 194IRC — internet relay chat
- 389LDAP — directory services
- 443HTTPS — encrypted web traffic (TLS; UDP for HTTP/3 QUIC)
- 445SMB — Windows file sharing
- 465SMTPS — mail submission over implicit TLS
- 500IKE — IPsec key exchange
- 514Syslog — system logging
- 515LPD — line printer daemon
- 587SMTP mail submission (STARTTLS)
- 631IPP — internet printing protocol (CUPS)
- 636LDAPS — LDAP over TLS
- 853DNS over TLS
- 873rsync file synchronization
- 902VMware ESXi management
- 989FTPS data
- 990FTPS control
- 993IMAPS — IMAP over TLS
- 995POP3S — POP3 over TLS
- 1080SOCKS proxy
- 1194OpenVPN
- 1433Microsoft SQL Server
- 1521Oracle database listener
- 1701L2TP VPN tunneling
- 1723PPTP VPN (legacy)
- 1812RADIUS authentication
- 1813RADIUS accounting
- 1883MQTT — IoT messaging
- 2049NFS — network file system
- 2082cPanel
- 2083cPanel over TLS
- 2181Apache ZooKeeper
- 2375Docker daemon (unencrypted)
- 2376Docker daemon (TLS)
- 3000Common dev server (Node.js, Rails, Grafana)
- 3128Squid proxy
- 3306MySQL / MariaDB database
- 3389RDP — Windows remote desktop
- 4369Erlang port mapper (RabbitMQ)
- 5060SIP — VoIP signaling
- 5061SIP over TLS
- 5222XMPP — instant messaging client
- 5353mDNS — multicast DNS (Bonjour/Avahi)
- 5432PostgreSQL database
- 5671AMQP over TLS (RabbitMQ)
- 5672AMQP (RabbitMQ)
- 5900VNC remote desktop
- 6379Redis key-value store
- 6443Kubernetes API server
- 6667IRC (classic)
- 8000Common dev/alt HTTP port
- 8080HTTP alternate — proxies and app servers
- 8443HTTPS alternate
- 8883MQTT over TLS
- 9000PHP-FPM / SonarQube / MinIO
- 9090Prometheus monitoring
- 9092Apache Kafka
- 9200Elasticsearch REST API
- 9418Git protocol
- 11211Memcached
- 27017MongoDB database