Hello, I am new to squid. Under the following scenario please throw some lights. I have a small ISP. I have around 50 clients that are basically offices. Each clients shares internet in around 10 computers. Some offices doesn't requires windows update while some offices doesn't requires anti-virus updates. Similarly some offices don't want their staff to browse sites like youtube.com. Instead of telling them how to turn off windows update or Anitvirus update I want to control that in server level. I thought of making different ACL in my squid server. Like deny if clients=xyz and site= windows update deny if clients=abc and site= youtube.com and so on But my senior told me that making many ACL will hampers squid process. So I want to know how many ACL is suitable in a single squid server. How many ACL is safe enough so as not to hamper squid's process. Please help. Thanks in advance Regards Rishav Upadhaya