I am trying to ignore requests from two IP addresses in my access_log. These two hosts connect every second and do "health checks" of the proxy service and I would like to eliminate the access_log spam that they create. Here is what I am trying: acl loadbalancers src 172.26.100.136/255.255.255.255 acl loadbalancers src 172.26.100.137/255.255.255.255 access_log /var/log/squid/access.log squid !loadbalancers This does not seem to have any effect. Requests from 172.26.100.136 and .137 are still appearing in the access_log. Any ideas? Running Squid 2.6 from EL5: squid-2.6.STABLE21-3.el5. Thanks, Josh