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Commonly Used Ports

Written by The Geekette on August 26, 2005 – 1:47 pm
Posted in Networking |


 
21 FTP – usually in DMZ 
22 SSH 
23 Telnet 
25 SMTP 
49 TACACS 
53 DNS 
67 & 68 DHCP 
80 HTTP 
110 POP3 
143 IMAP4 
161 SNMP 
389 & 636 LDAP 
993 IMAPS 
995 POP3S 
443 HTTPS / SSL 
UDP 1701 L2TP 
TCP 1723 PPTP

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2 Comments to “Commonly Used Ports”

  1. jhunholz (1 comments) Says:

    993 IMAPS
    995 POP3S

    These are becoming more popular as security is becoming a concern.

  2. Erica Ann (8 comments) Says:

    Thanks! Good point, I have added them.

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