Dear All: I 'm using Squid stable 2.5 stable 14 running on Linux ES 4 . My server use NCSA for authentication. I have faced a problem about proxy sharing. Some users have set the another proxy server--CCproxy-- and point to my proxy. I can not prevent it to share using proxy. Anyone please give me some advics, How to block it ? Thanks Niti: ) -- ########################## Mr niti lowhithee email Mr.niti@xxxxxxxxx ##########################