How do you test your router/firewall for security?

[Tom Buskey]

Larry Cook wrote:
> Now that I've moved to DSL, I was looking for ways to test the security 
> of my router/firewall.  I'm going to use ShieldsUp! (http://grc.com), 
> but was wondering what other tools were available.

Get a friend to do an nmap of your site to see what's open.  Unplug your 
firewall from the ISP and put a system of your own on that network card. 
  Do an nmap there.


http://scan.sygatetech.com/quickscan.html does scans for free
http://www.securityspace.com/smysecure/single_index.html