Enable-FWPort.ps1

1. <# 
2. .SYNOPSIS 
3.     This script enables then disables the SMTP port on a local system  
4. .DESCRIPTION 
5.     This script first creates a FW object, then creates a port. The 
6.     script then addes that port to the firewall rules. The script 
7.     finally removes the port. The script also prints before/after 
8.     results. 
9. .NOTES 
10.     File Name  : Enable-FWPort.ps1 
11.     Author     : Thomas Lee - tfl@psp.co.uk 
12.     Requires   : PowerShell Version 2.0 
13. .LINK 
14.     This script posted to: 
15.         http://www.pshscripts.blogspot.com 
16.     MSDN Sample posted at: 
17.         http://msdn.microsoft.com/en-us/library/aa366425(VS.85).aspx 
18. #> 
19.  
20. ##  
21. # Start of Script 
22. ##  
23.   
24. # Define Constants 
25. $NET_FW_IP_PROTOCOL_UDP = 17 
26. $NET_FW_IP_PROTOCOL_TCP = 6 
27. $NET_FW_SCOPE_ALL = 0 
28.   
29. # Create FW objecct 
30. $fwMgr = new-object -com HNetCfg.FwMgr 
31.   
32. # Get current profile 
33. $profile = $fwMgr.LocalPolicy.CurrentProfile 
34.   
35. # Display ports open: 
36. $profile.GloballyOpenPorts | ft name,port,enabled -auto 
37.   
38. # Create Port object 
39. $port = New-Object -com HNetCfg.FWOpenPort 
40. $port.Name = "SMTP" 
41. $port.Port = 25 
42. $port.Protocol = $NET_FW_IP_PROTOCOL_TCP 
43. $port.Scope = $NET_FW_SCOPE_ALL 
44.   
45. # Enable the port 
46. $port.Enabled = $True 
47. $profile.GloballyOpenPorts.Add($port) 
48.   
49. # Display results 
50. $profile.GloballyOpenPorts | ft name,port,enabled -auto 
51.   
52. # now remove the port 
53. $profile.GloballyOpenPorts.remove($port.port,$NET_FW_IP_PROTOCOL_TCP) 
54.   
55. # Display results 
56. $profile.GloballyOpenPorts | ft name,port,enabled -auto 
57. # End of script 

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