Hello To configure auto discovery for isa server for firewall client and proxy client, we can use Dhcp server option and DNS server I chose DHCP server and I configured as the following To configure the DHCP server to send the Auto configuration URL to the Web Proxy and Firewall client: 1. Start the DHCP snap-in. 2. Right-click the DHCP name, and then click Set Predefined Options. 3. Click Add. 4. Type wpad in the Name box. 5. Click String in the Data Type box. 6. Type 252 in the Code box. 7. Click OK. 8. Type http://string_value/wpad.dat in the String box in the Predefined Option and Values dialog box. 9. Click OK. http://ISA Servername/wpad.dat Now I want to use the ISA IP address instead of ISA Server name ( can I or not), I have several ISA Servers (30 servers) How I can do it, the Dhcp server don?t let me configure the same option with other IP address The problem is that I have web proxy clients that need local ISA server that is configured as Caching Server, and other firewall clients that need other ISA Server that is configured as firewall Server, I can?t apply the same option for all clients because they use different ISA servers, and I don?t want them to use the same ISA server because I have a big wireless network and with that I will have a lots of traffic My clients are 95,98 client and they don?t discover the ISA server for this reason I want to do this solution from Dhcp option I hope I could explain my problem clearly Or there is another methods to do it Any help or any idea Thank you hanan