Here’s a registry file to set the Internet Explorer proxy settings globally for all users on a computer. This should work with Internet Explorer 8, 9, 10 and 11.
This example only allows google.com website access; the rest would be proxied to 127.0.0.1:80.
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftInternet ExplorerControl Panel] "Proxy"=dword:0000001 "AutoConfig"=dword:0000001 [HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindowsCurrentVersionInternet Settings] "ProxySettingsPerUser"=dword:00000000 [HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionInternet Settings] "DialupUseLanSettings"=dword:0000001 "WarnOnIntranet"=dword:0000000 "ProxyEnable"=dword:0000001 "MigrateProxy"=dword:0000001 "ProxyServer"="127.0.0.1:80" "ProxyOverride"="google.com;*.google.com;" [HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindowsCurrentVersionInternet Settings] "ProxySettingsPerUser"=dword:00000000