I have a bit of a strange one which I hope someone can help with. I have experienced this twice on two different Virgin trains. Basically when you try and connect to the VPN you put in the RSA code, the VPN detects proxy settings, then it tries to connect to the Gateway, the response is the gateway policy has changed, it tries again to connect to the Gateway and then fails with the message the gateway is not responding. I then try to connect with my hotspot on my iPhone. That connects (although it does come up with the message that the gateway policy has changed) but it then tries to reconnect and is successful. I was assuming that it could be the port that the VPN is using and couldn’t get through. However if I remain connected to the VPN on the iPhone hotspot and quickly connect to the Virgin train wifi the VPN connection drops, as you would expect, and then reconnects successfully.
Are there any other ports that the tunnel would initiate on besides 443? Or could this be an issue with the trains wifi configuration?
I've been looking into the Visitor Mode setting which requires making a TCP connection to the gateway on port 443 as long as my gateway is listening on the IP of my WAN interface. Is this right?
Hope someone can help with this.