I'm using Squid in accelerator mode (Version 2.7.STABLE3). I'm using this config: http_port 72.43.22.19:80 accel vhost cache_peer 10.1.1.2 parent 8283 0 no-query originserver Name=ITS no-digest acl LIST dstdomain pages.example.com http_access allow LIST cache_peer_access ITS allow LIST cache_peer_access ITS deny all I can to describe my environment: We give this public site "mysite.example.com" (having this IP 72.43.22.19:80) where users can view 4 links. If you pass by mouse in front of this 4 links you can see: 1st link http://pages.example.com/mkLista.do?code=A 2nd link http://pages.example.com/mkLista.do?code=B 3rd link http://pages.example.com/mkLista.do?code=C 4th link http://pages.example.com/mkLista.do?code=D 'pages.example.com' is resolved as IP address of Squid, that is 72.43.22.19; this is a way to route requests to Squid accelerator (Squid is both on extern. and on intern. network) which accelerates to 10.1.1.2 (internal server). I'd like accelerating ONLY these 4 links but I have no one 'defaultsite', infact pages.example.com points to 'Apache Tomcat' default page; accelerated server gives only these 4 objects. I read HTTP/1.0 requests don't send 'Host' header so if I omit 'defaultsite', clients will get an "Invalid request" error. I can't understand if I have to insert defaultsite=pages.example.com in this case or not. Now I'm working fine without this option but I have doubts if requests of HTTP/1.0 clients can be accelerated.