Hi all !! I'm also new to ISA-Sever. I have to install a RAS-server in my company. I will use ISA as the tunnel-endpoint at company side. The clients should use only L2TP-Tunnels VPN-connections. In which mode must I install ISA. Firewall or Intergrated. What types of certificates do I need for L2TP-tunneling. Thanks a lot.. Chris