Ports and Protocols

 PORTS, PROTOCOLS, & USAGE

Below are the ports you will need to know for the CompTIA Network+ exam.

PORT #	Protocol	TCP / UDP	Usage
20	FTP (File Transfer Protocol)	TCP	Data
21	FTP (File Transfer Protocol)	TCP	Control, default
22	SSH (Secure Shell)	TCP	Secure logins
22	SFTP (Secure File Transfer Protocol)	TXP	Secure file transfers
22	SCP (Secure Copy Protocol)	TCP	Secure file transfers
23	Telnet	TCP	Remote access to servers
25	SMTP (Simple Mail Transfer Protocol)	TCP	Service to send/ relay email
53	DNS (Domain Name System)	UDP	Queries
53	DNS (Domain Name System)	TCP	Zone Transfers
67	DHCP (Dynamic Host Configuration Protocol)	UDP	Bootstrap – remote clients
68	DHCP (Dynamic Host Configuration Protocol)	UDP	IP address assignment
69	TFTP (Trivial File Transfer Protocol)	UDP	Firmware updates - imaging
80	HTTP (HyperText Transfer Protocol)	TCP	Website access non-secure
110	POP3 (Post Office Protocol version 3)	TCP	Retrieve email
123	NTP (Network Time Protocol)	UDP	Time Synchronization
143	IMAP (Internet Message Access Protocol)	TCP	Retrieve email
161	SNMP )Simple Network Management Protocol)	UDP	Logging and configuration
162	SNMP )Simple Network Management Protocol)	UDP	Traps
389	LDAP (Lightweight Directory Access Protocol)	TCP	Query & update directory
443	HTTPS (Hyper Text Transfer Protocol Secure)	TCP	Website access secure
445	SMB (Server Message Block)	TCP	File/Print Sharing Service
636	LDAPS (Secure LDAP)	TCP	Query & update directory
1720	H.323	TCP	VoIP Call setup
3389	RDP (Remote Desktop Protocol)	TCP	Secure remote connections
5004	RTP (Real-time Transfer Protocol)	UDP	Delivers streaming data
5005	RTCP (RTP Control Protocol)	UDP	Receives packet loss info
5060	SIP (Session Initiation Protocol)	UDP/TCP	VoIP call credentials
5061	SIP-TLS (Session Initiation Protocol)	UDP/TCP	VoIP call credentials secure