Ethereal is da-bomb!

I had a network issue where I could not see any of my home network computers from my laptop, so a friend of mine came over and he helped me troubleshoot some more. We finally pinned it down to an issue with the laptop having the wrong DHCP node type. It was set to peer-to-peer instead of hybrid and this was causing NETBIOS translation to not work correctly. We used Ethereal to pinpoint the issue. It allowed us to see the network activity that the laptop was sending and receiving or NOT.

"Ethereal® is used by network professionals around the world for troubleshooting, analysis, software and protocol development, and education."
- Ethereal.com