I have try to configure the squid proxy i till can't filter the IP address to use proxy server. Please help me to figure out what is the mistake of my setting. Below is my setting on /etc/squid/squid.conf : debug_options ALL,9 http_port 3128 acl localnet1 src 10.1.0.0/255.255.0. acl all src 0.0.0.0/0.0.0.0 acl cook dstdomain www.yahoo.com http_access allow localnet1 http_access deny cook http_access deny all pid_filename /var/run/squid.pid log_fqdn off cache_dir ufs /var/spool/squid/cache 100 16 256 cache_access_log /var/log/squid/access.log cache_store_log /var/log/squid/store.log dns_testnames 169.95.1.1 cache_effective_user squid cache_effective_group squid visible_hostname proxy cache_mgr wltan@xxxxxxxxx Please give me your help hand to make configuration done. Best Regards Sean Tan