We "Certified Network Consultants" are a group of network Consultants in Kerala(India). We installed ISA server in several network for Internet connection sharing.Messengers like yahoo,msn etc.. are not connecting properly from the client machines.Please help me to solve this problem. Expecting valuable response. Syam K.B CNC --------------------------------- Do You Yahoo!? HotJobs, a Yahoo! service - Search Thousands of New Jobs