I have succesfully configured my ISA server behind a router. But unfortunally my ISA server goes with no reason down. Firewall, webproxy en scheduled download service report normally inside isa management, but wen i connect to the internet from some clients it will not let met browse the internet and my webserver and mailserver are no longer published to the internet. Configuration settings: ipadres from ISP---router-(150.3.0.1 internal ip adres)--(external ip adres 150.3.0.2 with no DNS entry)-isaserver-(internal ipadres 192.168.0.4 dns from internal dns servers)--clients and web and mailserver. On my router i created an static route 192.168.0.0 mask 255.255.255.0 gateway 150.3.0.2 My internal DNS serer i deleted the root "." so i can enable forwarders to my ISP. My clients are secureNAT an webproxy clients. So my configuration looks oke. But still these errors occur. Has anyone a idea wat went wrong or is my configuration wrong?? Greetings Rob