My network has Cisco Pix between LAN and the ISP. Inside the LAN, users are able to use various VPN clients (Cisco, CheckPoint, Nokia) to connect to other companies. A new VPN client is required to be used and it is an AT&T VPN client. This AT&T VPN client does not work in this same environment. Are there any special PIX config to be done to allow this AT&T VPN client?