One of our customers has a linux firewall and had their isp changed from a partial t1 to a comcast cable modem connection. I changed the firewall and network settings on the linux to work with the new comcast connection. I can remotely access the linux server via ssh from one network (one of my other customers) but I cannot access it from my network. Why is that? When I do a tracert command from my computer it hits 3 comcast servers then stops right before it supposed to hit their gateway.