PowerShell Internet Proxy Script

proxy.ps1

<#
.Synopsis
This function will set the proxy settings provided as input to the cmdlet.
.Description
This function will set the proxy server.
.Parameter ProxyServer
This parameter is set as the proxy for the system.
Data from. This parameter is Mandatory
.Example
Set-Proxy -proxy "127.0.0.1:7080"
#>

Function Set-Proxy
{
    [CmdletBinding()]
    Param(
        [Parameter(Mandatory=$True,ValueFromPipeline=$true,ValueFromPipelineByPropertyName=$true)]
        [String[]]$Proxy
    )

    Begin
    {
        $regKey="HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings"
    }
    
    Process
    {
        Set-ItemProperty -path $regKey ProxyEnable -value 1
        Set-ItemProperty -path $regKey ProxyServer -value $proxy
        Set-ItemProperty -Path $regKey ProxyOverride -value '<local>'

        [Environment]::SetEnvironmentVariable('http_proxy', $proxy, 'User')
        [Environment]::SetEnvironmentVariable('https_proxy', $proxy, 'User')
    } 
    
    End
    {
        Write-Output "Proxy is now enabled"
        Write-Output "Proxy Server : $proxy"
    }
}


<#
.Synopsis
This function will clear the proxy settings provided as input to the cmdlet.
.Description
This function will clear the proxy server.
.Example
Clear-Proxy
#>

Function Clear-Proxy
{
    Begin
    {
        $regKey="HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings"
    }
    
    Process
    {
        Set-ItemProperty -path $regKey ProxyEnable -value 0
        Set-ItemProperty -path $regKey ProxyServer -value ''
        Set-ItemProperty -Path $regKey ProxyOverride -value ''

        [Environment]::SetEnvironmentVariable('http_proxy', $null, 'User')
        [Environment]::SetEnvironmentVariable('https_proxy', $null, 'User')
    } 
    
    End
    {
        Write-Output "Proxy is now clean"
    }
}

You can use profile to automatic import this proxy.ps1 script.

How to add profile: https://technet.microsoft.com/en-us/library/ff461033.aspx

edit Microsoft.PowerShell_profile.ps1

$profileDir=Split-Path -Parent $profile
. $profileDir\Proxy.ps1
Write-Output "Profile: Proxy.ps1 imported"