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  1. Services
  2. TCP

TCP 110, 995: POP3(S)

PreviousTCP 88: KerberosNextTCP 111: rpcbind

Last updated 3 years ago

In computing, the Post Office Protocol is an application-layer Internet standard protocol used by e-mail clients to retrieve e-mail from a mail server. POP version 3 is the version in common use.

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Related

General

Connect

nc -nv <ip> 110

or

telnet <ip> 110
USER user@<ip>
PASS password

List all emails

list

Retrieve email number 5, for example

retr 5

Guess users

nmap -sV --script=pop3-brute <ip>
nmap -p 110 --script pop3-brute --script-args userdb=<usernames-file>,passdb=<passwords-file> <ip>

Nmap scripts

  • pop3-brute.nse

  • pop3-capabilities.nse

  • pop3-ntlm-info.nse

Wikipedia
SMTP and POP3 commands