Hi Nigel, I have just upgraded all my Redhat 7.2 Squid servers to Fedora FC3, and I have WCCP working fine. It sounds like you have the squid wccp bit done ok - that's what does the hello stuff. - check your output from debug ip icmp on your router - if you're getting protocol unreachable, the problem is your wccp interception at the kernel on your squid box. I backed the kernel down to 2.6.8, only because that is what the wccp module had been supposedly written for. You shouldn't need to play around with sysctl settings, although you might need to switch off ECN if on and your testing indicates a need. I've never used ip_gre, only the ip_wccp module: Download the ip_wccp.c module from the Squid FAQ into /var/tmp echo 'obj-m := ip_wccp.o' > Makefile make -C /usr/src/linux M=$PWD V=1 modules cp ip_wccp.ko /lib/modules/2.6.8/kernel/net/ipv4 edit modules dep file (vi /lib/modules/2.6.8/modules.dep) and add the following line: /lib/modules/2.6.8/kernel/net/ipv4/ip_wccp.ko: modprobe ip_wccp Squid config fragment: wccp_version 4 wccp_router 10.129.110.251 snmp_port 3401 httpd_accel_host virtual httpd_accel_with_proxy on httpd_accel_uses_host_header on Cisco config: ip wccp web-cache redirect-list 100 ip wccp version 1 ip cef interface fa0/0 ! facing the firewall ip wccp web-cache redirect out no ip redirects ip route-cache same-interface interface fa0/1 ! facing the internal network ! don't classify internal traffic access-list 100 deny ip 10.0.0.0 0.255.255.255 10.0.0.0 0.255.255.255 ! classify internet bound traffic access-list 100 permit 10.0.0.0 0.255.255.255 any access-list 100 deny ip any IPtables config: iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT \ --to-port 3128 iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j DNAT \ --to 127.0.0.1:3128 Hope that something in the above sorts your problem, otherwise let me know and I will send you my (tediously long) build log which I wrote for the non-linux guys here. Regards Philip Damian-Grint CCNP Infrastructure Team Business Systems & IT Colliers CRE Tel. +44(0)20 7487 1928 Fax. +44(0)20 7487 1671 Confidentiality Notice This communication and the information it contains: (a) is intended for the person(s) or Organisation(s) named above and for no other persons or organisations and, (b) may be confidential, legally privileged and protected by law. Unauthorised use, copying or disclosure of any of it may be unlawful. When addressed to our clients any opinions or advice contained in this e-mail are subject to CCRE's terms and conditions of business notified to the client or expressed in the governing client engagement letter. If you receive this communication in error, please notify us immediately, destroy any copies and delete it from your computer system.
