Hi all. Still having problems with squid. I'm past the step where I got the UDP_DENIED messages, but now I'm getting UDP_MISS and TCP_MISS errors. This very confusing. From the cache.log, I see the the startup messages: . . . 2012/09/10 17:15:55 kid1| Logfile Daemon: opening log /home/squid-seo2/apps/squid-3.2.0.17/var/logs/access.log 2012/09/10 17:15:55 kid1| Squid plugin modules loaded: 0 2012/09/10 17:15:55 kid1| Store logging disabled 2012/09/10 17:15:55 kid1| DNS Socket created at [::], FD 15 2012/09/10 17:15:55 kid1| DNS Socket created at 0.0.0.0, FD 16 2012/09/10 17:15:55 kid1| Adding domain corp.bbi.com from /etc/resolv.conf 2012/09/10 17:15:55 kid1| Adding domain prd.slacker.com from /etc/resolv.conf 2012/09/10 17:15:55 kid1| Adding nameserver 10.2.20.10 from /etc/resolv.conf 2012/09/10 17:15:55 kid1| Adding nameserver 10.2.11.14 from /etc/resolv.conf 2012/09/10 17:15:55 kid1| Configuring Parent 10.2.12.13/8080/0 2012/09/10 17:15:55 kid1| Configuring Parent 10.2.12.14/8080/0 2012/09/10 17:15:55 kid1| Loaded Icons. 2012/09/10 17:15:55 kid1| Accepting reverse-proxy HTTP Socket connections at local=10.2.12.73:80 remote=[::] FD 17 flags=9 2012/09/10 17:15:55 kid1| Accepting ICP messages on [::]:3130 2012/09/10 17:15:55 kid1| Sending ICP messages from [::]:3130 2012/09/10 17:15:55 kid1| Accepting HTCP messages on [::]:4827 2012/09/10 17:15:55 kid1| Sending HTCP messages from [::]:4827 2012/09/10 17:15:55 kid1| Configuring Sibling prdseoproxy02.corp.bbi.com/3128/3130 I then run a telnet to port 80 on the box and do a simple GET. When I do that I get this: ^F2012/09/10 17:26:55 kid1| temporary disabling (Service Unavailable) digest from prdseoproxy02.corp.bbi.com I tried repeating the telnet to the same client a couple more times, thinking that squid would have in its cache. But it doesn't. In face it repeats this message: 2012/09/10 17:36:11 kid1| Detected DEAD Sibling: prdseoproxy02.corp.bbi.com So I'm doing something wrong, but all I can see is that it's the peer-to-peer communications somehow. Here is the pertinent data from the squid.conf file: http_port 10.2.12.73:80 accel vhost # acl prdseoproxy01 src 10.2.12.73/32 # acl prdseoproxy02 src 10.2.12.74/32 acl squid_peer src 10.2.12.185/32 acl squid_peer src 10.2.12.186/32 acl lb_source src 10.2.12.0/28 http_access allow lb_source icp_port 3130 htcp_port 4827 icp_access allow squid_peer miss_access deny squid_peer htcp_access allow squid_peer cache_peer prdseoproxy02.corp.bbi.com sibling 3128 3130 # http_access allow squid_peer cache_peer 10.2.12.13 parent 8080 0 originserver default no-query no-digest connect-timeout=15 cache_peer 10.2.12.14 parent 8080 0 originserver default no-query no-digest connect-timeout=15 Yes, this is a reverse proxy, and I'm really stumped. Please help. Thanks.