I have a PIX 501 I am using with a cable modem which gives me a dhcp address. I have been able to get the 501 working with dhcp on both the outside interface and inside interface, but have not been able to connect to the main office with cisco vpn client 3.5. I think I have to open some ports or even add a static statement, (how is this possible with dhcp), but I am unsure of what to do, can anyone PLEASE help me???