Get external IP
# Name: externalip.ps1
# Function: Get your external IP address
# Language: Windows PowerShell
# Author: Jimmy Johansson
# Creation: 2009-08-31
# Example: "./externalip" will return your external IP
Save the script in a text document and save it with the ps1 extension and then call it from a PowerShell prompt.
$client = new-object system.net.WebClient
$client.Headers.Add("user-agent", "PowerShell")
$data = $client.OpenRead("http://icanhazip.com")
$reader = new-object system.io.StreamReader $data
[string] $s = $reader.ReadToEnd()
write-host "Your external IP is $s"
$data.Close()
$reader.Close()