Port Numbers
TCP/UDP port number reference with service names and protocols. Look up well-known ports like HTTP(80), HTTPS(443), SSH(22), DNS(53), and more from well-known to ephemeral port ranges
111 entries
| Port | Protocol | Service | Description |
|---|---|---|---|
| 20 | TCP | FTP Data | FTP data transfer |
| 21 | TCP | FTP Control | FTP control (command) |
| 22 | TCP | SSH | Secure Shell - remote login |
| 23 | TCP | Telnet | Telnet remote login (unencrypted) |
| 25 | TCP | SMTP | Simple Mail Transfer Protocol - email delivery |
| 43 | TCP | WHOIS | WHOIS protocol - domain info lookup |
| 49 | TCP | TACACS+ | TACACS+ authentication protocol |
| 53 | TCP/UDP | DNS | Domain Name System - name resolution |
| 67 | UDP | DHCP Server | DHCP server - automatic IP assignment |
| 68 | UDP | DHCP Client | DHCP client |
| 69 | UDP | TFTP | Trivial File Transfer Protocol |
| 79 | TCP | Finger | Finger protocol - user information lookup |
| 80 | TCP | HTTP | HyperText Transfer Protocol - web traffic |
| 88 | TCP/UDP | Kerberos | Kerberos authentication system |
| 110 | TCP | POP3 | Post Office Protocol v3 - email retrieval |
| 111 | TCP/UDP | RPCBind | ONC RPC port mapping |
| 119 | TCP | NNTP | Network News Transfer Protocol |
| 123 | UDP | NTP | Network Time Protocol - time synchronization |
| 135 | TCP/UDP | MS RPC | Microsoft RPC Endpoint Mapper |
| 137 | UDP | NetBIOS Name | NetBIOS Name Service |
| 138 | UDP | NetBIOS Datagram | NetBIOS Datagram Service |
| 139 | TCP | NetBIOS Session | NetBIOS Session Service |
| 143 | TCP | IMAP | Internet Message Access Protocol - email management |
| 161 | UDP | SNMP | Simple Network Management Protocol - network monitoring |
| 162 | UDP | SNMP Trap | SNMP trap notifications |
| 179 | TCP | BGP | Border Gateway Protocol - routing |
| 194 | TCP | IRC | Internet Relay Chat |
| 389 | TCP/UDP | LDAP | Lightweight Directory Access Protocol |
| 443 | TCP | HTTPS | HTTP over TLS/SSL - encrypted web traffic |
| 445 | TCP | SMB | Server Message Block - file sharing |
| 465 | TCP | SMTPS | SMTP over SSL (deprecated, use 587) |
| 500 | UDP | IKE | Internet Key Exchange - VPN key exchange |
| 512 | TCP | rexec | Remote process execution |
| 513 | TCP | rlogin | Remote login service |
| 514 | TCP | rsh | Remote shell service |
| 514 | UDP | Syslog | System log protocol |
| 515 | TCP | LPD | Line Printer Daemon - printing |
| 520 | UDP | RIP | Routing Information Protocol |
| 543 | TCP | Klogin | Kerberos authenticated remote login |
| 544 | TCP | Kshell | Kerberos authenticated remote shell |
| 554 | TCP | RTSP | Real Time Streaming Protocol |
| 546 | TCP/UDP | DHCPv6 Client | DHCPv6 client |
| 547 | TCP/UDP | DHCPv6 Server | DHCPv6 server |
| 587 | TCP | SMTP Submission | Email message submission (authenticated) |
| 623 | UDP | IPMI | Intelligent Platform Management Interface |
| 631 | TCP | IPP/CUPS | Internet Printing Protocol / CUPS printing |
| 636 | TCP | LDAPS | LDAP over SSL |
| 873 | TCP | rsync | rsync file synchronization |
| 993 | TCP | IMAPS | IMAP over SSL - encrypted email management |
| 995 | TCP | POP3S | POP3 over SSL - encrypted email retrieval |
| 1080 | TCP | SOCKS | SOCKS proxy protocol |
| 1099 | TCP | Java RMI | Java Remote Method Invocation |
| 1194 | UDP | OpenVPN | OpenVPN VPN tunnel |
| 1433 | TCP | MS SQL | Microsoft SQL Server |
| 1434 | UDP | MS SQL Monitor | Microsoft SQL Server Monitor |
| 1521 | TCP | Oracle DB | Oracle Database |
| 1701 | UDP | L2TP | Layer 2 Tunneling Protocol |
| 1723 | TCP | PPTP | Point-to-Point Tunneling Protocol - VPN |
| 1812 | UDP | RADIUS Auth | RADIUS authentication protocol |
| 1813 | UDP | RADIUS Acct | RADIUS accounting protocol |
| 1883 | TCP | MQTT | MQTT messaging protocol (IoT) |
| 2049 | TCP/UDP | NFS | Network File System - network file sharing |
| 2181 | TCP | ZooKeeper | Apache ZooKeeper client connections |
| 2375 | TCP | Docker | Docker REST API (unencrypted) |
| 2376 | TCP | Docker TLS | Docker REST API (TLS encrypted) |
| 3000 | TCP | Dev Server | Development server (Node.js/Rails etc.) |
| 3268 | TCP | LDAP GC | LDAP Global Catalog (Active Directory) |
| 3306 | TCP | MySQL | MySQL database |
| 3389 | TCP/UDP | RDP | Remote Desktop Protocol - remote desktop |
| 3690 | TCP | SVN | Apache Subversion |
| 4222 | TCP | NATS | NATS messaging system |
| 4369 | TCP | EPMD | Erlang Port Mapper Daemon |
| 4443 | TCP | Pharos | Alternative HTTPS port |
| 4848 | TCP | GlassFish | GlassFish admin console |
| 5000 | TCP | UPnP / Flask | UPnP / Flask development server |
| 5432 | TCP | PostgreSQL | PostgreSQL database |
| 5601 | TCP | Kibana | Kibana dashboard |
| 5672 | TCP | AMQP | RabbitMQ (AMQP) message broker |
| 5900 | TCP | VNC | Virtual Network Computing - remote desktop |
| 5985 | TCP | WinRM HTTP | Windows Remote Management (HTTP) |
| 5986 | TCP | WinRM HTTPS | Windows Remote Management (HTTPS) |
| 5984 | TCP | CouchDB | Apache CouchDB database |
| 6379 | TCP | Redis | Redis in-memory data store |
| 6443 | TCP | Kubernetes API | Kubernetes API server |
| 6660 | TCP | IRC Alt | IRC alternative port range (6660-6669) |
| 7001 | TCP | WebLogic | Oracle WebLogic Server |
| 8000 | TCP | HTTP Alt | Alternative HTTP port (development) |
| 8009 | TCP | AJP | Apache JServ Protocol (Tomcat) |
| 8080 | TCP | HTTP Proxy | HTTP proxy / alternative HTTP port |
| 8089 | TCP | Splunk | Splunk management port |
| 8443 | TCP | HTTPS Alt | Alternative HTTPS port |
| 8883 | TCP | MQTT TLS | MQTT over TLS |
| 8888 | TCP | HTTP Alt | Alternative HTTP port / Jupyter Notebook |
| 9000 | TCP | SonarQube | SonarQube / PHP-FPM |
| 9042 | TCP | Cassandra | Apache Cassandra native protocol |
| 9090 | TCP | Prometheus | Prometheus monitoring |
| 9092 | TCP | Kafka | Apache Kafka broker |
| 9200 | TCP | Elasticsearch | Elasticsearch HTTP API |
| 9300 | TCP | Elasticsearch Transport | Elasticsearch inter-node communication |
| 9418 | TCP | Git | Git protocol |
| 10000 | TCP | Webmin | Webmin administration interface |
| 10250 | TCP | Kubelet | Kubernetes Kubelet API |
| 11211 | TCP/UDP | Memcached | Memcached caching system |
| 15672 | TCP | RabbitMQ Mgmt | RabbitMQ management console |
| 27017 | TCP | MongoDB | MongoDB database |
| 27018 | TCP | MongoDB Shard | MongoDB shard server |
| 27019 | TCP | MongoDB Config | MongoDB config server |
| 28017 | TCP | MongoDB Web | MongoDB web interface |
| 44134 | TCP | Helm Tiller | Helm Tiller server (deprecated) |
| 50000 | TCP | DB2 | IBM DB2 database |
| 50070 | TCP | Hadoop NameNode | Hadoop NameNode Web UI |