Hi, I am trying to use the ISA server to authenticate Netrust client, but not successful. I have to set my browser to point to the local Netrust proxy (localhost : 10080) and then my NEtrust proxy will point to my ISA server. According to NEtrust I have to modify the netrust.ini file to point to the ISA server instead of pointing to their server. which I have done so, but I couldn't get any authentication from the ISA server. Anyone can help? If you want to know about Netrust, you can go to www.netrust.com.sg. Thanks and regards, Pius