Hi all, I want to configure tproxy. here wha I did but getting error. I have FC4 with kernel 2.6.11. I downloaded it and xtracted it to /usr/src/. then I patched kernel as following #for i in /usr/src/cttproxy-2.6.20-2.0.6/patch_tree/01-nat_reservations.patch; do cat $i | patch -p1; done # for i in /usr/src/cttproxy-2.6.20-2.0.6/patch_tree/02-tproxy.patch; do cat $i | patch -p1; done # for i in /usr/src/cttproxy-2.6.20-2.0.6/patch_tree/03-nat_delete.patch; do cat $i | patch -p1; done After this I go to make menuconfig and go to IP: Netfilter Configuration ---> <*> IP tables support (required for filtering/masq/NAT) <*> Full NAT after enabling NAT I don't see any IP: Netfilter Configuration ---> <*> Transparent proxying <M> tproxy match support <M> TPROXY target support I think my kernel is still not propoerly patched. I am using following link for reference , http://fuzzylab00net.blog.dada.net/post/413913/Squid-2.6-+-tproxy-+-bridge-+... Can anybody help me and provide me complete documentation. I want to implement a squid so that after squid I doesn't get the nated IP, but instead I get original source IP Thanks a lot