Set proxy settings and proxy authentication

Question

I'm new to PowerShell, and I'm tired of changing proxy settings and proxy authentication every time I go to the university, is there a way to do that using PowerShell Commands , like using PowerShell script to enter the proxy address and the port and the authentication, instead of using the graphical windows InternetOptions>Connections>LanSettings (I assume that exists), if yes how can I do it?

I've searched the web and StackOverflow but I had different answers that didn't target what I want.

Answer 1

I was interested, so I wrote a little POSH CmdLet that should help. There were plenty of references via a search on Google for how to do this so the information was there. Most of the solutions I found weren't really in the standard Powershell coding convention so I couldn't help myself. Try this out. This does nothing for the "Automatically Detect Settings". You are on your own for that one. This does however Enable/Disable proxy settings:

function Modify-ProxySettings() {
    [CmdLetBinding(SupportsShouldProcess=$True)]
    Param (
        [Parameter(Mandatory=$False)][String]$Proxy,
        [Parameter(Mandatory=$False)][String]$Port,
        [ValidateSet("Disable","Enable")]
        [Parameter(Mandatory=$True)][String]$Action
    )
    Begin {
        $RegKey = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings"
        if ($Action.Equals("Enable") -and ([String]::IsNullOrEmpty($Proxy) -and [String]::IsNullOrEmpty($Port))) {
            throw New-Object System.Exception "Proxy and Port must be defined when enabling"
        }
    }
    Process {
        if ($Action.Equals("Enable")) {
            Set-ItemProperty -Path $RegKey -Name ProxyEnable -Value 1 
            Write-Verbose -Message "Set: $RegKey\ProxyEnable to Enabled(1)"
            Set-ItemProperty -Path $RegKey -Name ProxyServer -Value "$Proxy`:$Port"
            Write-Verbose -Message "Set: $RegKey\ProxyServer to $Proxy`:$Port"
            Write-Host "Proxy Enabled with $Proxy`:$Port"
        } elseif ($Action.Equals("Disable")) {
            Set-ItemProperty -Path $RegKey -Name ProxyEnable -Value 0
            Write-Verbose -Message "Set: $RegKey\ProxyEnable to Disabled(0)"
            Set-ItemProperty -Path $RegKey -Name ProxyServer -Value ""
            Write-Verbose -Message "Proxy server and port removed"
            Write-Host "Proxy Disabled" 
        }
    }
}

Usage:

Modify-ProxySettings -Action Disable #Disables

Modify-ProxySettings -Action Enable -Proxy someproxy.com -Port 1337 #Enables

Some validation catches:

• Action is mandatory and only takes "Disable" or "Enable". Use tab completion for simplicity
• Proxy and Port are required if "Enable" is chosen