How to Testing with proxy servers

I have some code in .NET V2.0 that is talking to an asmx service As a related issue I also have some code in the same winforms app that is doig BITS uploads We are a very small shop and quite frankly do not have any sort of proxy server setup But of course our clients will I want to test with a proxy server sitting between my home FIOS connecti开发者_StackOverflow社区on and the internets and I want to test when auth information is required against the proxy server Clearly the number of configurations in the wild are way many but any suggestions welcome 1) Any public proxy servers where I can create credential based accounts and test? 2) any catch all .NET solution like asking for creds setting them somehow on BITS uploads and asmx services and then just assuming they work 90% of the time

Thanks

You could run a proxy server on your own computer, then 'connect to yourself' as the proxy.