It is a very common task to set and clear the proxy setting depending on the client's network configuration.
I was frustrated going through Tools-->Internet options-->Connections tab-->LAN settings and configuring the proxy settings so I ended up having a couple of batch scripts that set the client's proxy and one to reset the settings when I am in a more relaxed environment where traffic passes through the normal gateway... Note that I have created shortcuts and set them to "Run as administrator" as the following commands require elevation.
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| @REM Works on vista+ | |
| @REM Set proxy | |
| netsh winhttp set proxy 127.0.0.1:8080 | |
| @REM Remove proxy | |
| netsh winhttp reset proxy |
