Hi, all, I tried several ways to block some special user-agent in squid, but it didn't work as our request: 1. using acl xxx browser -i "Mozilla/4.0 (compatible; MSIE 5.00; Windows 98)" then system complain: 2006/11/22 09:16:36| strtokFile: Mozilla/4.0 not found 2006/11/22 09:16:36| aclParseAclLine: WARNING: empty ACL: acl xxx browser "Mozilla/4.0 (compatible; MSIE 5.00; Windows 98)" 2. using header_access to filter, it still didn't get the result. any tips will be a great helpful, TIA Zhou