Hello list, For a time I'm searching web and squid lists for a solution for my case. I need to check users age when they try to access some sites like Orkut. In our environment we have a LDAP directory when user data is stored and I can search for user personal data. I found the external_acl is the best way to do this. IP-AUTH solution seens to help, but in our case we use thin-clients and have all the same ip of server. Transparent proxy is configured to avoid users deconfigure browser proxy settings and skip proxy rules. Someone can have a idea how can I implement this? Thanks, Christian Tosta.