proxy.pac を作ってみる。
こんな感じかな。
function FindProxyForURL(url, host)
{
if(shExpMatch(host, "localhost")) {return "DIRECT";}
if(isInNet(host, "127.0.0.1", "255.255.255.255")) {return "DIRECT";}
if(isInNet(host, "10.0.0.0", "255.0.0.0")) {return "DIRECT";}
if(isInNet(host, "172.16.0.0", "255.240.0.0")) {return "DIRECT";}
if(isInNet(host, "192.168.0.0", "255.255.0.0")) {return "DIRECT";}
return "PROXY 192.168.100.200:3128";
}