What is VPN/multiple VPN Pass-through?
VPN is Virtual Private Networking. This is a way for Computers in different locations to Network to each other using the Internet instead of a direct cable. VPNs are becoming increasingly popular with people who can’t always be physically present at a PC that they need to access regularly. eg People who work from home or on the road that need access to a data file or email account at the office. Another popular one is using a VPN to remote control a PC across the Internet using an application like Timbuktu or VNC. Doing this sort of thing via a VPN is far more secure than just connecting directly using just a username and password. Where VPNs can be a bit of a problem with Routers is because the Internet is involved certain security precautions are necessary and these have taken the form of different forms of data encryption. An unfortunate side effect of this encryption is that it isn’t particularly NAT friendly and will usually either be blocked or restricted somehow by most Routers.
