Hi
How can I block Maximum of my clients accessing the Internet.I want to allow only few of my clients.
mwj

if you wanna allow few Lan user to use squid then find the ip address of those users and
Do the following in your squid.conf
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acl validuser src 192.168.0.4/255.255.255.0 #Line 1
acl rangeofvaliduser 192.168.0.6-192.168.0.20/255.255.255.0 #Line 2

http_access deny all
http_access allow validuser
http_access allow rangeofvaliduser
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Now in line u can give the ip of a specific user which u wanna give access to net.
And from Line2 you can specify a range of user who are allowed to connect internet thruogh proxy

Also here validuser and rangeofvaliduser are the user defined variable assigned to the range of ip address or a specific ip address.