I used manual

http://wiki.squid-cache.org/ConfigExamples/TPROXYPatchingCentOS?highlight=%28centos%29%7C%285%5C.2%29

Centos 5.2

kernel 2.6.25.11

tproxy-kernel-2.6.25-20080519-165031-1211208631.patch

tproxy-iptables-1.4.0

tproxy-iptables-1.4.0-20080521-113954-1211362794.patch

Squid3-HEAD

iptables -t mangle -N DIVERT iptables -t mangle -A PREROUTING -p tcp -m socket -j DIVERT
 
iptables -t mangle -A DIVERT -j MARK --set-mark 1 iptables -t mangle -A DIVERT -j ACCEPT
 
iptables -t mangle -A PREROUTING -p tcp --dport 80 -j TPROXY --tproxy-mark 0x1/0xffffffff
 
iptables -t mangle -A PREROUTING -p tcp --dport 80 -j TPROXY --tproxy-mark 0x1/0x1 --on-port 3128

I didn’t got problem with installation or compiling.

I didn’t used the wccp

I manual set proxy ip in browser

And got the address

ERROR:

IPInterception.cc(171) NetfilterTransparent:  NF getsockopt(IP_TRANSPARENT) failed: (92) Protocol not available