Dear Friends, I have setup ISA server in integrated mode, and its running well with 10 users. I have also another setup on Linux operating system with 10 users its also running well. Now I want to merg this two network and want to make ISA server as a parent proxy of linux server. For this I have made changes in Linux's Squid server and Squid send to request to ISA 1) Http on port 8080 2) ICP on port 3130 I think there is no ICP option in ISA so there is one more option in Squid server to replace ICP on port 3130 to echo UDP on port 7. So I want to know how to enable UPD port 7 on ISA server. Shakir --------------------------------- Do you Yahoo!? Yahoo! Tax Center - File online, calculators, forms, and more