Folks,

I am very happy with my firewall, I think!  I would like to have some
type of scan against my firewall to see how secure it is.  How do folks
recommend me test things?  I do have a friend with a high speed
connection that has a UNIX machine which I can access at root.  I know
there are service that cost $$$, but I would like to keep it free, for
now.

Sam