Port Numbers for CCNA/Net+

FTP (File Transfer Protocol) Data

TCP/20

FTP (File Transfer Protocol) Control

TCP/21

SSH (Secure Shell)

TCP/22

Telnet

TCP/23

SMTP (Simple Mail Transfer Protocol)

TCP/25

DNS (Domain Name System)

UDP & TCP/53

DHCP (Dynamic Host Configuration Protocol) Server

UDP/67

DHCP (Dynamic Host Configuration Protocol) Client

UDP/68

TFTP (Trivial File Transfer Protocol)

UDP/69

HTTP (Hypertext Transfer Protocol)

TCP/80

POP3 (Post Office Protocol)

TCP/110

NTP (Network Time Protocol)

UDP/123

SNMP (Simple Network Management Protocol) Agents

UDP/161

SNMP (Simple Network Management Protocol) Traps
Agent sends trap to manager

UDP/162

LDAP (Lightweight Directory Access Protocol)

TCP/389

HTTPS (Hypertext Transfer Protocol Secure)

UDP & TCP/443

SMB (Server Message Block)

TCP/445

Syslog

UDP/514

SMTPS (Simple Mail Transfer Protocol Secure)

TCP/587

LDAPS (Lightweight Directory Access protocol over SSL)

TCP/636

SQL (Structured Query Language) Server

TCP/1433

RDP (Remote Desktop Protocol)

TCP/3389

SIP (Session Initiation Protocol)

TCP/5060 & 5061