Habilitar o deshabilitar un servidor proxy en Internet Explorer utilizando PowerShell

Habilitar

Set-ItemProperty 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings' -Name ProxyEnable -Value 1

Deshabilitar

Set-ItemProperty 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings' -Name ProxyEnable -Value 0