I recently installed a Pantech 4G air card which will not allow me to access my remote network when I establish a VPN connection to my office network. I'm using a Cisco VPN client which seems to work fine with my previous air card (3G). I've tried installing the 4G air card on other machines and it's still having connection issues after it authenticates via VPN. Does the 4G require specific port that we need to open on our network?
