Re: Linux or Unix distribution for network sniffing



There has been lots of info already posted, but based on the fact you
call yourself an "Enterprise Security Specialist" I hope you knew most
of it, including the the limitations of SPAN ports v.s dedicated taps,
and the different options such as inline devices, or passive etc :)

In terms of what I think your specific question was (based on the
subject of your email), you should look at like FreeBSD. They have
been pretty cutting edge in terms of adding things like zero copy into
the BPF libraries
(http://en.wikipedia.org/wiki/Berkeley_Packet_Filter). i.e. they take
packet capture seriously.

Before putting anything inline, sniffing for a while to see what's
actually being used before you start blocking isn't a bad idea. It
will not actually take you very long to find out what other than web
is exiting your gateway.

Al

@Jonathon Leigh - I've never seen any Cisco device that can log every
packet> But all the Cisco kit I work with can do SPAN (most can do
RSPAN too) which you could use to feed into your sniffer.


On Tue, Jun 22, 2010 at 10:12 AM, Hristiyan Lazarov
<hristiyan.lazarov@xxxxxxxxx> wrote:
Hello, I'm new to this mail list so lets first introduce myself - my
name is Hristiyan Lazarov and I'm currently working as an Enterprise
Security Specialist for a UK based company.

I'm looking to implement in our organisation *NIX based network
sniffer. Basically, I want to trace and record every single packet
that is coming to, or going out from my network.

We are working with sensitive information, that's why my employer want
me to record the traffic at least 1 month back. We have a proxy which
is dealing with our HTTP traffic but some
people are playing smart trying to use some anonymizers to access
restricted websites.

Any suggestions would be greatly appreciated.

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------------------------------------------------------------------------
Securing Apache Web Server with thawte Digital Certificate
In this guide we examine the importance of Apache-SSL and who needs an SSL certificate. We look at how SSL works, how it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates.

http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442f727d1
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