Common TCP and UDP Ports (Network+ N10-009)

Port 20

TCP ftp-data, File Transfer Protocol (data)

Port 21

TCP ftp control

Port 22

TCP ssh/sftp, Secure Shell and also FTP over SSH

Port 23

TCP telnet, Telnet

Port 25

TCP smtp, Simple Mail Transfer Protocol

Port 53

TCP/UDP dns, Domain Name System

Port 67

UDP bootps, BOOTP/DHCP Server

Port 68

UDP bootpc, BOOTP/DHCP Client

Port 69

UDP tftp, Trivial File Trasfer Protocol

Port 80

TCP http

Port 123

UDP ntp/sntp, Network Time Protocol/Simple NTP

Port 161

UDP snmp, Simple Network Management Protocol

Port 162

UDP snmp-trap, Simple Network Management Protocol Trap

Port 389

TCP/UDP ldap Lightweight Directory Access Protocol

Port 443

TCP https, HTTP-Secure SSL/TLS

Port 445

TCP smb, Server Message Block

Port 514

UDP syslog, Syslog

Port 587

TCP smtps, Simple Mail Transfer Protocol Secure

Port 636

TCP ldaps, Lightweight Directory Access Protocol Secure

Port 1433

TCP sql-server, MS SQL Server

Port 3389

TCP rdp, Remote Desktop Protocol

Port 5060

TCP/UDP sip, Session Initiation Protocol

Port 5061

TCP/UDP sips, Session Initiation Protocol Secure