topic Re: Firewall Open Port WMI in Getting Data In

Firewall Open Port WMI

splunk13 — Fri, 08 Feb 2013 08:13:22 GMT

Hi Splunk community,

I have just a little question, I have some servers in a DMZ. All ports are blocked inside to this DMZ and this DMZ to inside.

I use WMI for getting logs with splunk. Which ports do I need open LAN -> DMZ and DMZ -> LAN? (tcp I think ?)
I don't use forwarder.

Thank you for your help,

splunk13

Re: Firewall Open Port WMI

Ayn — Fri, 08 Feb 2013 11:16:56 GMT

Not really a Splunk question, but here goes:

You don't need to open any ports from your DMZ to your LAN (which is just as well, because that would break the idea of a DMZ). As for communication from your LAN to your DMZ, normally WMI doesn't use fixed ports like that. It uses DCOM. Recent versions of Windows let you setup a fixed port though, more info here: http://msdn.microsoft.com/en-us/library/windows/desktop/bb219447%28v=vs.85%29.aspx

Re: Firewall Open Port WMI

splunk13 — Fri, 08 Feb 2013 12:48:11 GMT

Hi Ayn,

Thank you for you fast response !
I need do this manipulation on my splunk server, exact ?

Regards,

Splunk13

Re: Firewall Open Port WMI

splunk13 — Thu, 14 Feb 2013 08:51:04 GMT

Hi all,

I up this topic because the answer's Ayn doesn't work.

Anyone has a solution for me ?

Thanks for your help !

Splunk13

Re: Firewall Open Port WMI

Ayn — Thu, 14 Feb 2013 09:10:18 GMT

What do you mean "it doesn't work"? I didn't have any solution, just pointers to where you can read more about this 🙂

WMI queries is inherently not a Splunk functionality, it is a functionality in Windows and as such you really should be asking this on a Windows forum, not a Splunk forum.

Re: Firewall Open Port WMI

splunk13 — Thu, 14 Feb 2013 14:44:51 GMT

Ok Thanks for you answer. But anyone has done that before ?

Re: Firewall Open Port WMI

krusty — Mon, 18 Jul 2016 10:06:54 GMT

Hi, I have a similar problem with remote WMI requests.
We just have set on the remote server a static port for WMI requests. Seems to be working fine. But we noticed on a third party firewall that splunk forwarder tries to connect by other ports then defined on the remote server.
Is there any configuration on the forwarder possible, like a WMI port configuration or something like that?
With the documentation, I couldn't find any Information about this.

I know that WMI is not a splunk issue, but maybe we can manipulate it by splunk. 🙂