RE: Firewall rulebase automation - Grey Box assessment

[Chris Brenton <cbrenton () chrisbrenton org>]

On Thu, 2008-06-26 at 08:28 +0400, Naveed Ahmed wrote:
> Hello All
> There is another great tool at http://www.niiconsulting.com/products/Firesec.html
>
> This will help you to housekeep rule bases as well as analyse them

IMHO the problem with all of these tools is that they assume the rule
base is an accurate description of what is permitted to pass on the
wire. Anyone who has done wire level testing knows this is very rarely
the case (think CP or Juniper permitted ACK session establishment to
simplify active-active, Cisco poor handling of ICMP errors, multiple
firewalls with poor sequence number or checksum validation, etc. etc.).

Tools like FTester or Dr. Morena will give you a much more accurate
view. More info at:

http://dev.inversepath.com/trac/ftester
http://www.securiteam.com/tools/5MP0P1F40Y.html

Or even better, snag copies of nmap, hping & Scrappy and customize your
testing. You may be pretty surprised at what you are leaking through.

HTH,
Chris



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