You'll also probably want to allow remote clients to connet via Fiddler so make sure the Tools -> Fiddler Options. MyServer, as in The other important thing is to add the code snippet to the OnBeforeRequest function and not the OnBeforeResponse function. It's in important to note that 'webserver' is not a variable name-it must be replaced with the name of your web server (i.e. The code snippet to be added to your custom rules file includes two string listerals: 'webserver:8888' and 'webserver:80'. Option #1 is only useful if you're setting up Fiddler as a local reverse proxy if you want to use Fiddler from external clients, you need to go for Option #2. NET Framework V.2 or higher to do its thing, and it installs a quick access icon on the IE toolbar in addition to the Start Menu and Command Line options.The Fiddler documentation includes instructions on how to configure the tool as a reverse proxy ( ). It requires a recent version of Microsoft’s Internet Explorer and. However, for system administrators and others who know how to make good use of Fiddler2’s capabilities, it’s essential.įiddler2 is a free utility from Microsoft that is certified for versions of Windows up to Vista, but we installed and tested it in Windows 7 and it worked just fine.

Inexperienced users can get into trouble with Power Toys if they don’t know what they’re doing before they do it, and while Fiddler2 can’t do much harm, it’s a complex tool for users who need it, not a tweak anyone can “fiddle” with. The Help file links to a Web site, unusual for a Microsoft product and of questionable utility if the connection it’s debugging isn’t working. Fiddler2’s interface is typical of the type, businesslike and efficient but lacking the stylish elements of recent Windows applications. You can use it to inspect two-way HTTP activity, set breakpoints, and more.įiddler2 is one of Microsoft’s nifty Power Toys, a class of plain but useful system tools and other small utilities that greatly expand users’ control over the Windows environment as well as their PC’s software and hardware.

It logs all HTTP traffic between your PC and the Internet. Microsoft’s Fiddler2 is a Web Debugging Proxy utility that lets you “fiddle” with incoming or outgoing HTTP data.

Fiddler setup proxy on local pc