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Port Numbers

Questions/Answers

answerquestion
20 TCP, 21 TCP File Transfer Protocol (FTP)
22 TCP / UDP Secure Shell (SSH) SSH File Transfer Protocol (SFTP) Secure Copy (SCP)
23 TCP Telnet
25 TCP Simple Mail Transfer Protocol (SMTP)
49 TCP / UDP Terminal Access Controller Access-Control System (TACACS)
*IP protocol number 50 Encapsulating Security Payload (ESP) (used with IPSec), *Is not a port number, but an IP protocol number used with IPSec
*IP protocol number 51 Authenticating Header (AH) (used with IPSec), *Is not a port number, but an IP protocol number used with IPSec
53 TCP / UDP Domain Name Server (DNS)
67 UDP, 68 UDP Dynamic Host Configuration Protocol (DHCP)
69 UDP Trivial File Transfer Protocol (TFTP)
80 TCP HyperText Transfer Protocol (HTTP)
88 TCP Kerberos
110 TCP Post Office Protocol (POP3)
119 TCP Network News Transport Protocol (NNTP)
123 UDP Network Time Protocol (NTP)
135 TCP, 137 & 138 TCP / UDP 139 TCP Network Basic Input/Output System (NetBIOS)
143 TCP / UDP Internet Message Access Protocol (IMAP4)
161 TCP / UDP, 162 TCP / UDP Simple Network Management Protocol (SNMP)
389 TCP / UDP Lightweight Directory Access Protocol (LDAP)
443 TCP / UDP HTTP with Secure Sockets Layer (SSL/TLS) (HTTPS)
445 TCP Windows 2000 CIFS/SMB (file access)
500 UDP Internet Key Exchange (IKE) (used with IPSec)
636 TCP / UDP Lightweight Directory Access Protocol over TLS/SSL (LDAPS)
989 TCP / UDP, 990 TCP / UDP FTP Secure (FTPS or FTP over SSL/TLS)
1701 UDP Layer 2 Tunneling Protocol (L2TP)
1723 TCP / UDP Point-to-Point Tunneling Protocol (PPTP)
1812 TCP / UDP, 1813 TCP / UDP Remote Authentication Dial In User Service (RADIUS)
3389 TCP Remote Desktop Protocol (RDP)
Created by: mpulse
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