Oh good lord, that network person should be fired. Fast. And a security audit needs to be performed on your network.

Routers as a base device provide at best NAT. That's it. Any competent hacker can get through NAT. It's security through obscurity.

Now, me, I find Windows Firewall with Advanced Security (read, the Windows Firewall included in Vista and 7) to be enough, but I'm also not doing anything critical on my home Windows machine.

I am the Doctor, and THIS... is my SPOON!