On 07.01.10 10:18, Niti Lohwithee wrote: > I 'm using Squid stable 2.5 stable 14 running on Linux ES 4 . My > server use NCSA for authentication. that's damn old version... > 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. what kind of problem do you encounter? Why can't your users use intermediarte proxies? > Anyone please give me some advics, How to block it ? you could see what headers do those proxies add to requests and deny all requests containing those headers. Note that users apparently can disable adding of those headers... -- Matus UHLAR - fantomas, uhlar@xxxxxxxxxxx ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. Depression is merely anger without enthusiasm.