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Which Ports for DCOM

By guenter.matthaeus ·
Hello,
there are some discussions in our company to allow developers access for DCOM Communication.
So we have to open our firewall. But I can't find informations about the port range we have to open.
I've found one article that DCOM Communication will not function with a networkaccess over NAT.
So my questions are:
-Will DCOM work with NetworkAdressTranslation
-Which Port/Range I have to open
-There are security risks which DCOM communication

I need some feed, and questions for our Networkadmins and Databaseadmins for first discussion

Thanks for all input, links and so on

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by BFilmFan In reply to Which Ports for DCOM

Port 135, which is a security risk.

http://grc.com/port_135.htm

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by guenter.matthaeus In reply to

Sorry, but this was my first idea and I found it very fast with google. What I also found are articles that DCOM uses Dynamic Port assigning, teh Article http://support.microsoft.com/kb/154596/EN-US/
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dndcom/html/msdn_dcomfirewall.asp
and the Information that DCOM will not work with NAT.
and so on.
So all my questions I've found via Web
Thanks a lot

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by guenter.matthaeus In reply to Which Ports for DCOM

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