Online firewall tester. ShieldsUP!, GRC.com

[Threepwood]

This is cool, you can see how well your firewall works. I won't comment on it's technical prowess seeing as I'm a lyman though.

I use Comodo firewall and it gets a perfect score.

http://www.grc.com/default.htm

 

[The_Unbeliever]

I don't use Shields Up, but rather ask somebody else to hammer my firewall with nmap.

With Shields up you have to contact the site in order to request a scan - and this leaves a port open.

 

[Threepwood]

Well which port would it leave open?

When I do the scan it does not report any open ports, so unless the leave that one out it seems to work for me.

But you're idea is interesting too, I'll investigate that program.