Example proxy.pac configuration file

example_proxy.pac

// This is just an example proxy.pac and is NOT to be used in production without changes to suit your environment.
//
// Some references about Proxy configuration below.
// https://wiki.squid-cache.org/SquidFaq/ConfiguringBrowsers
// https://learn.microsoft.com/en-us/troubleshoot/developer/browsers/connectivity-navigation/optimize-pac-performance

function FindProxyForURL(url, host) { 

/* Normalize the URL for pattern matching */
url = url.toLowerCase();
host = host.toLowerCase();

/* Don't proxy local hostnames */
if (isPlainHostName(host))
{
return 'DIRECT';
}

// replace .local with your own domains
 
/* Don't proxy local domains */
if (dnsDomainIs(host, ".local") ||
(host == ".local") ||
{
return 'DIRECT';
}

// If the requested website is hosted within the internal network, send direct. 
    if (isPlainHostName(host) || 
        shExpMatch(host, "*.local") || 
        isInNet(dnsResolve(host), "10.0.0.0", "255.0.0.0") || 
        isInNet(dnsResolve(host), "172.16.0.0", "255.240.0.0") || 
        isInNet(dnsResolve(host), "192.168.0.0", "255.255.0.0") || 
        isInNet(dnsResolve(host), "127.0.0.0", "255.255.255.0")) 
        return "DIRECT"; 

// If the IP address of the local machine is within a defined 
// subnet, send to a specific proxy. 
//    if (isInNet(myIpAddress(), "10.10.5.0", "255.255.255.0")) 
//        return "PROXY 1.2.3.4:8080"; 

// DEFAULT RULE: All other traffic, use below proxy.
// 172.16.1.2 should be replaced by your actual proxy IP address.
// 3128 should be replaced by your actual proxy listening port.

    return "PROXY 172.16.1.2:3128; }