Cisco1720 router --> 4 windows based servers 1 centos virtual server 1 centos squid server. Client computers (8) Would like to have all web traffic blocked except websites defined in a allowed_sites.squid config file. My squid.conf file Should my squid server have 2 network cards or can I leave it with the one ? +++++++ [root@VIRT1 ~]# cat /etc/squid/squid.conf | sed '/ *#/d; /^ *$/d' http_port 192.168.31.3:3128 hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin \? cache deny QUERY acl apache rep_header Server ^Apache broken_vary_encoding allow apache cache_dir ufs /var/spool/squid 1000 16 256 access_log /var/log/squid/access.log squid dns_nameservers 192.168.31.11 refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern . 0 20% 4320 acl all src 0.0.0.0/0.0.0.0 acl manager proto cache_object acl localhost src 127.0.0.1/255.255.255.255 acl to_localhost dst 127.0.0.0/8 acl SSL_ports port 443 acl CONNECT method CONNECT acl good_url dstdomain "/etc/squid/allowed_sites.squid" acl pnc_network src 192.168.31.0/255.255.255.0 http_access allow manager localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access allow good_url http_access deny pnc_network http_access allow localhost http_access deny all http_reply_access allow all icp_access allow all visible_hostname VIRT1 coredump_dir /var/spool/squid ++++++++ client's cannot access anything. Any help would be appreciated Jim