Port numbers Flashcards
FTP (File Transfer Protocol)
Ports 20, 21
SSH (Secure SHell)
Port 22
SFTP (SSH File Transfer Protocol)
Runs through an SSH tunnel on port 22. Not the same as FTP or FTPS. more common than FTPS.
Telnet
Port 23
SMTP (Simple Mail Transfer Protocol)
Port 25
DNS (Domain Name System)
Port 53
HTTP (Hypertext Transfer Protocol)
TCP Port 80
POP3 (Post Office Protocol, version 3)
Port 110
IMAP4 (Internet Message Access Protocol version 4)
TCP Port 143
SNMPv3 (Simple Network Management Protocol version 3)
UDP ports 161, 162
LDAP (Lightweight Directory Access Protocol)
Port 389
NNTP (Network News Transfer Protocol)
Port 433
SSL/TLS (Secure Sockets Layer, Transport Layer Security)
TCP Port 443
HTTPS (Hypertext Transfer Protocol over SSL/TLS)
TCP Port 443 (same as SSL/TLS)
SMTPS (Simple Mail Transfer Protocol over SSL/TLS)
Port 465 OR 587
IKE (Internet Key Exchange) protocol
UDP port 500 - is used by ISAKMP in IPSec to negotiate the SA - security association - between hosts
STARTTLS
Port 587, older version of SMTPS
LDAPS (Secure Lightweight Directory Access Protocol)
Port 636
FTPS (File Transfer Protocol Secure)
Port 990 (for implicit FTPS). Port 21, the normal FTP command port, is used for explicit FTPS
IMAPS (Internet Message Access Protocol over SSL/TLS)
TCP Port 993
POP3S (Post Office Protocol version 3 over SSL/TLS)
Port 995
Microsoft SQL
Port 1433
MySQL
Port 3306
RDP (Remote Desktop protocol)
Port 3389
RTP (Real-time Transport Protocol)
UDP Port 5004
SRTP (Secure Real-time Transport Protocol)
UDP Port 5004
Additional web servers non-standard
Port 8080
PPTP (Point-to-Point Tunneling Protocol)
TCP Port 1723. Early VPN developed by Microsoft
L2TP (Layer 2 Tunneling Protocol)
in IPsec, port 500
Microsoft SQL
Port 1433
TFTP (Trivial File Transfer Protocol)
Port 69
Kerberos
Port 88
