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Common Network Ports

Search and reference standard TCP/UDP port assignments and their associated services.

PortProtocolService NameDescriptionType
20TCPFTPFile Transfer Protocol (Data Transfer)
System (0-1023)
21TCPFTPFile Transfer Protocol (Command Control)
System (0-1023)
22TCPSSHSecure Shell / SFTP
System (0-1023)
23TCPTelnetUnencrypted text communications
System (0-1023)
25TCPSMTPSimple Mail Transfer Protocol (Routing)
System (0-1023)
53TCP/UDPDNSDomain Name System
System (0-1023)
67UDPDHCPDynamic Host Configuration Protocol (Server)
System (0-1023)
68UDPDHCPDynamic Host Configuration Protocol (Client)
System (0-1023)
80TCPHTTPHypertext Transfer Protocol
System (0-1023)
110TCPPOP3Post Office Protocol (Email Receipt)
System (0-1023)
119TCPNNTPNetwork News Transfer Protocol
System (0-1023)
123UDPNTPNetwork Time Protocol
System (0-1023)
135TCP/UDPMSRPCMicrosoft RPC Endpoint Mapper
System (0-1023)
137TCP/UDPNetBIOSNetBIOS Name Service
System (0-1023)
139TCP/UDPNetBIOSNetBIOS Session Service
System (0-1023)
143TCPIMAPInternet Message Access Protocol
System (0-1023)
161UDPSNMPSimple Network Management Protocol
System (0-1023)
389TCP/UDPLDAPLightweight Directory Access Protocol
System (0-1023)
443TCPHTTPSHTTP Secure (TLS/SSL)
System (0-1023)
445TCPSMBMicrosoft Active Directory, Windows shares
System (0-1023)
465TCPSMTPSSMTP Secure (TLS/SSL)
System (0-1023)
500UDPISAKMPInternet Key Exchange (IPsec)
System (0-1023)
514UDPSyslogSystem Logging Protocol
System (0-1023)
587TCPSMTPSMTP Message Submission
System (0-1023)
636TCPLDAPSLDAP Secure (TLS/SSL)
System (0-1023)
993TCPIMAPSIMAP Secure (TLS/SSL)
System (0-1023)
995TCPPOP3SPOP3 Secure (TLS/SSL)
System (0-1023)
1433TCPMSSQLMicrosoft SQL Server database
Registered
1521TCPOracleOracle database default listener
Registered
1723TCPPPTPPoint-to-Point Tunneling Protocol
Registered
2049TCP/UDPNFSNetwork File System
Registered
3306TCPMySQLMySQL / MariaDB database
Registered
3389TCP/UDPRDPRemote Desktop Protocol
Registered
5432TCPPostgreSQLPostgreSQL database system
Registered
5900TCP/UDPVNCVirtual Network Computing
Registered
6379TCPRedisRedis key-value store
Dynamic/Private
8080TCPHTTP-AltAlternative HTTP port (Tomcat, proxies)
Dynamic/Private
8443TCPHTTPS-AltAlternative HTTPS port
Dynamic/Private
27017TCPMongoDBMongoDB database daemon
Dynamic/Private