RE: Sniff telnet connections

["Damien Dinh" <DDinh () sycuan com>]

" filter out port 21"

FYI...You mean TCP 23; 21 is FTP.  

As to the "remote" issue, if you have a network IDS/IPS, you can do this
at any choke point where you know the traffic will traverse; just apply
a filter to look for source-destination IP of relevant devices listening
on the telnet port; 

an alternative is to install a local sniffer (TCPDUMP, Ethereal, or even
Snort (not a sniffer but can act as one) on the Telnet server or the
client you want to sniff.

Respectfully,

Damien Dinh, MSNS, GSEC
MIS Security Specialist

-----Original Message-----
From: Dan Catalin Vasile [mailto:hardware_cta () yahoo com] 
Sent: Wednesday, May 03, 2006 9:48 PM
To: pen-test () securityfocus com
Subject: Re: Sniff telnet connections

Generally, with a sniffer :)... and filter out port
21. You have to be more specific about what platform
do you use, what type of network you are trying to
sniff, etc.

--- carlopmart <carlopmart () gmail com> wrote:

> Hi all,
>
>   how can I sniff remote telnet conecctions??
>
> many thnaks.
>
> -- 
> CL Martinez
> carlopmart {at} gmail {d0t} com

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