Hi, [root@proxy-HO /]# rpm -qa squid squid-2.5.STABLE3-0 my squid is running on Fedora Core 1 the version of my squid is squid-2.5.STABLE3-0 rpm. so far it's work well, but it cannot deny users based on the mac address of NIC, got from the internet resource that I have to recompile my squid, but my squid was installed by using RPM, with RPM format how to recompile it ? .. can someone please help me to solve this? Thanks a lot in advance