Wireshark-users: Re: [Wireshark-users] Yum install centos 5.2

From: Mike Brandonisio <mbrando@xxxxxxxxxxxxxx>
Date: Sun, 11 Oct 2009 17:01:42 -0500
Hi,

I'm running this:

    tshark -f "port 25 and src host 74.xx.xx.xx"

This is the output I'm getting

 0.090293 74.xx.xx.xx -> 64.xx.xx.xx   SMTP C: EHLO host22.example.com

That is exactly what I'm looking for.

How can I can narrow the filter only those that contain 'SMTP'?

Sincerely,
Mike
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Guy Harris wrote:
On Oct 11, 2009, at 2:28 PM, Mike Brandonisio wrote:

  
Since tshark appears to work I'm trying to record HELOs/EHLOs for a  
specific IP, the value of the HELOs/EHLOs.

I have this so far:

tshark -f "port 25" -R "ip.src=""
    
I'd try

	tshark -f "port 25 and src host 74.xx.xx.xx"

which will do all the filtering in libpcap/the kernel.

However, if the HELO/EHLOs are coming on port 587 rather than port 25,  
try

	tshark -f "port 587 and src host 74.xx.xx.xx".

I'm assuming here that the HELOs/EHLOs are coming *from* 74.xx.xx.xx;  
if not, try

	tshark -f "port 587 and dst host 74.xx.xx.xx"
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