6.1.6 Common TCP and UDP Ports

Most common ports for Network+

TCP 20

File Transfer Protocol - Data (FTP-Data)

TCP 21

File Transfer Protocol - Control (FTP-Control)

TCP 22

Secure Shell/FTP over SSH (ssh/sftp)

TCP 23

Telnet

TCP 25

Simple Mail Transfer Protocol (SMTP)

TCP/UDP 53

Domain Name System (DNS)

UDP 67

Dynamic Host Configuration Protocol Server (DHCP)/ Bootps

UDP 68

Dynamic Host Configuration Protocol Client (DHCP) /Bootpc

UDP 69

Trivial File Transfer Protocol (TFTP)

TCP 80

Hypertext Transfer Protocol (HTTP)

TCP 110

Post Office Protocol version 3 (POP3)

UDP 123

Network Time Protocol (NTP) / Simple NTP (SNTP)

TCP 143

Internet Message Access Protocol (IMAP)

UDP 161

Simple Network Management Protocol (SNMP)

UDP 162

Simple Network Management Protocol Trap (SNMP Trap)

TCP/UDP 389

Lightweight Directory Access Protocol (LDAP)

TCP 443

HTTP-Secure (HTTPS)/Secure Sockets Layer(SSL)/Transport Layer Security (TLS)

TCP 445

Server Message Block

UDP 514

Syslog

UDP 546

DHCPv6 Client

TCP 547

DHCPv6 Server

TCP 587

SMTP Secure (smtps)

TCP 636

LDAP-Secure(Ldaps)

TCP 993

IMAP Secure (imaps)

TCP 995

POP3 Secure (pop3s)

TCP 1433

SQL Server (sql-server)

TCP 1521

Oracle SQL*NET (sqlnet)

TCP 3389

Remote Desktop Protocol (RDP)

UDP 5004

Used for RTP (Real-time Transport Protocol)

UDP 5005

Used for RTCP (Real-time Control Protocol)

TCP/UDP 5060

Used for SIP (Session Initiation Protocol)

TCP/UDP 5061

SIP-Secure (sips)

TCP 3306

MySQL/MariaDB(mysql)