Wondering if I can enlist some help from the list in preparing my network for ISA 2000 Ent.? I initially tried to follow the quick-guide and the cache-only dns tutorial but ran into some problems getting internet access to my secureNAT clients. I found that after installing ISA I had internet access on the server without having to configure any rules. I also found that whenever I attempted to nslookup external resources I kept getting DNS timeout errors. So before I reinstall ISA I want to take a minute and see if I can get DNS properly configured before proceeding. As of right now I'm using my linksys with the default configuration. I'm using the Configure ISA Server Interface Settings tutorial and running into problems after setting up the interfaces as suggested: South - Internal Interface first North - External Interface second North - External Interface: Uncheck Client for Microsoft Networks & File and Printer Sharing. Use the following IP address: IP: 123.123.123.170 Subnet: 255.255.255.248 Gateway: 123.123.123.169 DNS is empty Click Advanced. Click DNS tab: uncheck "Register this connection's. Click WINS tab: uncheck "Enable LMHosts lookup Select "Disable NetBIOS over TCP/IP Click OK South - Internal Interface: Check Client for Microsoft Networks & File and Printer Sharing. Use the following IP address: IP: 192.168.1.50 Subnet: 255.255.255.0 Gateway: 0.0.0.0 DNS: Preferred DNS server: 192.168.1.40 - Internal AD DNS server Click Advanced. Click DNS tab: check "Register this connection's. Click WINS tab: uncheck "Enable LMHosts lookup Select "Enable NetBIOS over TCP/IP Click OK My internal DNS is configured as follows: Interfaces tab: IP of internal DNS server Forwarders tab: IP's of BellSouth DNS servers Secure only selected Now I create a dial up connection for my DSL account and connect the external nic cable to my DSL modem. I'm able to connect to the internet and perform nslookup on internal resources, but when I try to nslookup anything external I get the following error: > nslookup bellsouth.net or 205.152.37.254 Server: myserver.mydomain.com Address: 192.168.1.40 DNS request timed out. Timeout was 2 seconds. DNS request timed out. Timeout was 2 seconds. *** Request to myserver.mydomain.com timed-out C:\> What am I missing here? Prior to this I'm able to nslookup internal and external resources. Any responses are appreciated.