hi all i am running Linux 9 and squid shipped with Linux i think it is 2.5 stable 1 we are using acl ip based and 24 hours and time based depends on the package. problem is this we have used http_access Deny to a client in day bcz his time package is night he is unable to browse but he is still signing msn and yahoo and mirc how can i stop this and how can i block a mac address of a client permanently to not use the network. Regards. Zeroone