startup script to run IE at startup only if on corporate network

I want to be able to launch IE at startup to our internal main sharepoint page when people start their computers.  However since this site is not outward facing I wanted to know if there is a way I can script something so it first looks for a server or IP or anything else that would always be connected while on our network, this way if they are a laptop user it does not try to launch IE when they are off the network.  Is this possible?
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Tim LewisNetwork ManagerAsked:
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Shift-3Connect With a Mentor Commented:
The script below (largely cribbed from http://www.microsoft.com/technet/scriptcenter/resources/qanda/oct07/hey1012.mspx) checks the computer's IP address.  If the first three octets match those of your corporate network then it launches the webpage.  This should be adequate unless you're using CIDR or have multiple disparate subnets, in which case it gets more complicated.

Paste the script below into a text file with a .vbs extension.  Customize the value of the strCorporate variable with first three octets of your corporate network.  Customize the value of the strHomepage variable with the URL of your Sharepoint page.

If you want to specify two octets instead of three (e.g. 10.100) then edit line 15 accordingly.


On Error Resume Next
 
strCorporate = "10.0.100"
strHomepage = "http://sharepoint.yourdomain.com"
 
Set objWMIService = GetObject("winmgmts:\\.\root\cimv2")
 
Set colItems = objWMIService.ExecQuery _
	("Select * From Win32_NetworkAdapterConfiguration Where IPEnabled = True")
 
For Each objItem in colItems
	For Each objAddress in objItem.IPAddress
		arrIPAddress = Split(objAddress, ".")
		If arrIPAddress(0) <> 0 AND arrIPAddress(0) <> 169 Then
			strNetwork = arrIPAddress(0) & "." & arrIPAddress(1) & "." & arrIPAddress(2)
			Exit For
		End If
	Next
	Exit For
Next
 
If strNetwork = strCorporate Then
	Set objShell = CreateObject("WScript.Shell")
	objShell.Run(strHomepage)
End If

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Tim LewisNetwork ManagerAuthor Commented:
Great.  Thanks.
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