The CGI proxy server pulls the ultimate destination information from the data embedded in the HTTP request, sends out its own HTTP request to the ultimate destination, and then returns the result to the proxy client. A CGI proxy tool's security can be trusted as far as the operator of the proxy server can be trusted.
A Proxy Auto-Configuration (PAC) file is a JavaScript function that determines whether web browser requests (HTTP, HTTPS, and FTP) go directly to the destination or are forwarded to a web proxy server. The JavaScript function contained in the PAC file defines the function: function FindProxyForURL(url, host) { // Automatic proxy selection: Specify a host-name and a port number to be used for all URLs. Most browsers allow you to specify a list of domains (such as localhost) that will bypass this proxy. Proxy auto-configuration (PAC): Specify the URL for a PAC file with a JavaScript function that determines the appropriate proxy for each URL. We recommend that for all web browsers that will connect directly to the cloud proxy, you use the PAC file configured within the cloud service. This file contains a number of global settings and allows you to enter exclusions of your own (for example, intranet sites) that should not use the cloud service proxy (see Proxy bypass ). A browser supporting PAC provides access to a list of functions as defined in the original Netscape Specification. Each browser implements PAC in a sandbox, allowing access to only those JavaScript functions required to operate and nothing more. To ensure computers on networks like these can access Office 365, network and proxy administrators need to manage the list of FQDNs, URLs, and IP addresses that make up the list of Office 365 endpoints. These need to be added to direct route, proxy bypass, and/or firewall rules and PAC files to ensure network requests are able to reach Office 365. This page includes a PAC file example which has been proven to be flexible, easy to update, while still providing accurate results. Features. Proxy bypass rules for private IP networks, internal hostnames, and hosts with .local domain extension.
I want to use a file located on each PC in the folder C:\Proxy.pac. I am not able to make it works with the auto configure url set to #file://c:/proxy.pac# (without both # sign) in Internet Explorer. I do not rely on a web server and use something like http
Jun 19, 2019 · AutoConfigUrl : https://obfuscated.example/proxy.pac (Mon Jun 10 02:24:29 PM) <-WinHttpGetProxyForUrl failed (12167) (0x2F87) The proxy auto-configuration script could not be downloaded (Mon Jun 10 02:24:29 PM) Falling back to DIRECT/NO_PROXY. Setting WINHTTP_ACCESS_TYPE_NAMED_PROXY flag in WINHTTP_AUTOPROXY_OPTIONS dwAccessType Feb 09, 2010 · This pac uses Embc Openhive for all traffic except https but then uses https just for Openhive. Also excludes local traffic from proxy eg WebDAV or local web intranet traffic Modify host name , change 10.2.*.* to your local ip range proxy if not on Openhive.
C:\proxy.pac The customer Firm's servers have beeen configured this way and our app is not able to communicate to our web servers. However, if the PAC is configured to be served via a web server then all traffic will be determined by the PAC file.