Common Port Numbers Flashcards
FTP -File transport protocol
(TCP) 20,21
SSH- Secure Shell
(TCP) 22
SFTP- Secure file transport protocol
(Uses SSH)
(TCP)22
SCP- Secure copy
(Uses SSH)
22
Telnet
(TCP) 23
SMTP- Simple mail transport protocol
(TCP) 25
TACACS- Terminal access controller access-control system
(both) 49
DNS- Dynamic host configuration protocol
(UDP) 67,68
TFTP- Trivial file transport protocol
(UDP) 69
HTTP- Hypertext transfer protocol
(both) 80
HTTPS- Hypertext transfer protocol secure
(both) 443
SSL VPN- Secure sockets layer virtual private network
(both) 443
Kerberos
(TCP) 88
POP3- Post office protocol version 3
(TCP) 110
NNTP- Network news transfer protocol
(TCP) 119
IMAP4- Internet message access protocol version 4
(TCP) 143
SNMP- Simple network management protocol
(UDP) 161
SNMP trap- Simple network management protocol trap
(TCP) 162
LDAP- Lightweight directory access protocol
(TCP) 389
ISAKMP (VPN)- Internet security association and key management protocol (virtual private network)
(UDP) 500
Syslog
(UDP) 514
Transmission Control Protocol
A network communication standard that establishes a session prior to communicating
User Datagram Protocol
A network communication that does not establish a session prior to communicating
