[Cerowrt-devel] How to close default open firewall ports in 3.3.8

[Shannon Kendrick]

What's the best resource for learning how to configure the firewall to close the ports that are open by default?  I installed 3.3.8-26 "sugarland" into a brand new WNDR3800 to be used as my home router, and I immediately ran ShieldsUp!! (grc.com) and noticed open ports.  However, I'm at a loss as to how to close them.
Thanks,
Shannon Kendrick