If I have 2 entries in squid.conf which reference to same machine, I have to define these 2 acl before to use them ? Or Squid can retrieve these info even if these 2 acl are not defined before ? It's necessary to define acl before use it ? Example: http_access allow test acl test src 192.168.1.41/255.255.255.255 acl test2 src 192.168.1.41/255.255.255.255