Common Port Reference
Well-known TCP/UDP port numbers for common protocols and services.
20FTP DataTCP
21FTP ControlTCP
22SSH / SFTPTCP
23TelnetTCP
25SMTPTCP
53DNSTCP/UDP
67DHCP ServerUDP
68DHCP ClientUDP
69TFTPUDP
80HTTPTCP
110POP3TCP
119NNTPTCP
123NTPUDP
143IMAPTCP
161SNMPUDP
194IRCTCP
389LDAPTCP
443HTTPSTCP
445SMB / CIFSTCP
465SMTPSTCP
514SyslogUDP
587SMTP (Submission)TCP
636LDAPSTCP
993IMAPSTCP
995POP3STCP
1194OpenVPNUDP
1433MS SQL ServerTCP
1521Oracle DBTCP
2049NFSTCP
3306MySQL / MariaDBTCP
3389RDPTCP
5432PostgreSQLTCP
5900VNCTCP
6379RedisTCP
6443Kubernetes APITCP
8080HTTP Alt / ProxyTCP
8443HTTPS AltTCP
9200ElasticsearchTCP
27017MongoDBTCP
Ports 0–1023 are well-known ports. Ports 1024–49151 are registered. Above 49151 are dynamic/private.