Hi
Create one ACL before http_access deny all
acl employee src "/etc/squid/employeeip"
acl employeeallowedsite dstdomain "/etc/squid/employeeallowedsite"
acl employeedeniedsite dstdomain "/etc/squid/employeedeniedsite"
http_access deny employee employeedeniedsite
http_access allow employee employeeallowedsite
Now you have to make three text file using your favorite text editor (like vim, nano or gedit)
1) /etc/squid/employeeip - List of your Employee IP (each line one IP)
or You can use apply for all.
2) /etc/squid/employeeallowedsite - List of allowed site for employee
3) /etc/squid/employeedeniedsite - List of restricted /denied site for employee
and Restart Squid Server
Thanks,
Avin Tokade