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How do I setup access for WMI from Windows 2003 to Windows 2003 through a firewall?

periker
periker asked
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Last Modified: 2013-12-04
I have a monitor machine (Server A xxx.xxx.xxx.xxx) that needs to connect to a different server (Server B yyy.yyy.yyy.yyy).
Both machines are behind firewalls. Both machines have their own public ips but use NAT to a private IP.

I need to know what ports I need open on each firewall and what settings I need to change on each server.

Thanks in advance!
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CERTIFIED EXPERT
Most Valuable Expert 2011
Top Expert 2011

Commented:
I dont think WMI uses actual ports, but the the Admin Shares or else an application destined to accept WMI calls. What apps are you trying to communicate to?
CERTIFIED EXPERT
Most Valuable Expert 2011
Top Expert 2011
Commented:
Domain and Forest Trust Tools and Settings
http://technet2.microsoft.com/WindowsServer/en/library/108124dd-31b1-4c2c-9421-6adbc1ebceca1033.mspx?mfr=true

Did find this though...
Enabling WMI Connectivity with Windows Firewall 'On'
http://spyxkb.stbernard.com/webhelp/Troubleshooting/Tasks/WMI/SX0038.htm

The proccesses that WMI use are primarilty RPC and DCOM, which travel on 135 I believe....

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Rich RumbleSecurity Samurai
CERTIFIED EXPERT
Top Expert 2006
Commented:
Well to get to the admin shares you can/do use ports port 135, 137-139 and or port 445. Your firewalls can allow this_IP from this_port to that_IP to that_IP
I'd use port 445, only allow this IP to that IP, so that others can't see that port 445 is open.
http://www.grc.com/port_445.htm (see the "related ports" links also)
-rich
Forced accept.

Computer101
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