Can I use Point-to-Point Tunneling Protocol (PPTP) with Port Address Translation (PAT)?
A. No. PAT translates a local, or private, IP address to the public IP address and allocates a high port number to the private IP address. This way, PAT can understand return packets. With PPTP, the originating IP address (from the private network) is embedded within the PPTP packet, thus PAT cannot translate it. Q. Why can I not see my network through Network Neighborhood? A. Your machine might not be able to get to your Windows Internet Naming Service (WINS) Server. Check the IP address of your WINS server, and try to ping it. If your WINS server is on the other side of the router, ensure that you have NetBIOS name spoofing enabled on your Cisco 700. Also, WINS does not work across Port Address Translation (PAT). If you use PAT, you need to have a WINS proxy server on your local private network. Q. What is NetBIOS name spoofing? A. NetBIOS names work in a similar fashion to IP host names. A name is associated with an IP address. However, with NetBIOS the name allows for services such
