Firewall Wizards mailing list archives

Re: FW-1 and RPC with MSDTC


From: Michael Nelson <mikenel () iapetus com>
Date: Fri, 12 Jan 2001 14:51:23 -0500 (EST)

P.S. The decision about dynamic/static endpoints is one that the
programmer makes at development time.

On Fri, 12 Jan 2001, Michael Nelson wrote:

On Sat, 13 Jan 2001, Darren Reed wrote:
- you can't control what port number an RPC service gets (you can only
  influence the range used for the random allocation)

Dynamic endpoints (TCP ports) is a feature that is not mandatory.  You can
use statically bound endpoints. Exchange, in fact, has registry options
that let you put some of its well-known services (like the DS and IS) on
specific TCP ports.

Now if you can do all that with MS RPC packets too, someone please send
me the docs on how to decode the "service number" or "service name" in the
RPC-loc packets.  It has got to be there, else the client end cannot talk
to the server, I just don't know how...anyone, please ? :)

You register interface UUIDs with the endpoint mapper.

Also, see http://support.microsoft.com/support/kb/articles/Q159/2/98.ASP.

I am pretty sure that CheckPoint 4.x has support for MSRPC interface
filtering.

-mike




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