I suggest you to contact squid and adding some headers will might help in this case. Regards, Eliezer ----- Original Message ----- From: "Alexandre Chappaz" <alexandrechappaz@xxxxxxxxx> To: squid-users@xxxxxxxxxxxxxxx Sent: Thursday, April 11, 2013 6:38:04 PM Subject: high traffic with google Hi, we are handling a rather large network ( ~140Kusers ) and we use one unique public IP address for internet traffic. This lead google to get suspicious with us ( captcha with each search ) Do you know if google can whitelist us in some way? where to contact them? any way to smartly bypass this behavior? Thanks Alex