I have an issue with 2 PCs connected to a us robotics hub uplinked to Cayman modem router that connects to the bellsouth netwok via ppoe. I can surf from both machines and ping the router, yet I cannot ping either machine from each other. Obviously the two lost connectivity, I have link lights all around. WOW , I am A+, Network+ and security+ certified, I have never encoutered a situation like this. All help is appreciated.
Jorge