Re: firewall-wizards digest, Sniffing out a firewall problem

[Tony Howlett <thowlett () netsecuritysvcs com>]

Alan,  there are two very good programs available for windows for analyzing 
network traffic,  windump and snort.  Both are totally free.  Do a search 
using google or the like for windump.  You will also need to load winpcap 
which is a packet capture DLL for windump to work.  That should also be out 
there on the net somewhere.   Snort, though primarily a IDS can be used in 
network sniffer mode.  The output is a little neater and easier to read 
though the installation is somewhat more difficult. Snort is available at 
www.snort.org

Good luck with your troubleshooting.


> Message: 2
> Reply-To: <ayoung () veros com>
> From: aryoung () veros com (Alan Young)
> To: <firewall-wizards () nfr com>
> Date: Wed, 31 Oct 2001 09:46:25 -0800
> Subject: [fw-wiz] Sniffing out a firewall problem.
>
> Hi All
> We have been experiencing a firewall failure due to a NIC card that is
> apparently chattering and creating an extremely high number of excessive
> collisions.
>
> What is the best way to debug this?
> We need to install a sniffer program on a PC somewhere, right?
> I have checked and sniffer software appears to be very expensive?
> Is there freeware that is available for Win32?
>
> This is definitely a job for the wizards.
>
> Alan R. Young


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