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Re: (ASCEND) Q. Can you run servers behind Pipeline (running NAT)?

I know we do it on Cisco routers by statically mapping them in the routing table.

Lou.



------------------------
  From: Jake Messinger <jake@ams.com>
  Subject: Re: (ASCEND) Q. Can you run servers behind Pipeline (running NAT)? 
  Date: Thu, 13 Nov 1997 10:35:35 -0600 (CST) 
  To: Lou Melograna <lmelogra@AtrionComm.com>
  Cc: Edwin Yeh <ery2@po.cwru.edu>, Scott Chrestman <src@netropolis.net>, ascend-users@bungi.com


> On Thu, 13 Nov 1997, Lou Melograna wrote:
> 
> > Is there a way to statically map IP bogus addresses to a valid IP  address in order to be 
hit 
> > from the outside world?
> 
> Isnt that called ip aliasing? I know how to do it on a linux box. You have
> to make sure that you have a route to the bogus address if its NOT in your
> loca subnet, and of course this depends on your upstream provider as well.
>  
> > > Lou.
> > 
> > ------------------------
> >   From: Scott Chrestman <src@netropolis.net>
> >   Subject: Re: (ASCEND) Q. Can you run servers behind Pipeline (running NAT)? 
> >   Date: Wed, 12 Nov 1997 16:24:56 -0600 (CST) 
> >   To: Edwin Yeh <ery2@po.cwru.edu>
> >   Cc: ascend-users@bungi.com
> > 
> > 
> > > On Wed, 12 Nov 1997, Edwin Yeh wrote:
> > > 
> > > > I don't know exactly how NAT works. (I'll be interested to know. All I can
> > > > guess, is that when the packet exists the router, somehow the header
> > > > information is wrapped.)
> > > 
> > > From http://www.ascend.com/895.html :
> > > 
> > > When the Pipeline first connects to the NAS, it receives an initial IP
> > > address via PPP negotiation. The Pipeline then builds a
> > >  lookup table that matches the workstation's bogus address with the
> > > registered address that the NAS assigns. The Pipeline
> > >  re-addresses packets destined for your workstation (i.e., destined to the
> > > registered address) with the bogus address it actually has.
> > >  This translation is transparent both to the workstation and to devices on
> > > the WAN. 
> > > 
> > > > 
> > > > But can you run servers (such as ftp server or web server) behnid the
> > > > Pipeline router (running NAT)?
> > > 
> > > Yes you can run them, but users from the outside world will not be able to
> > > hit them.
> > > 
> > > > 
> > > > In other words, is there a way for outside users to point to a specific
> > > > machine inside the NAT subnet.
> > > 
> > > No.
> > > 
> > > > 
> > > > Thanks.
> > > > 
> > > > Edwin
> > > > 
> > > > P.S. I can think of a solution. That is, don't use NAT and run DNS after the
> > > > pipeline router. The DNS effectively become the router and the pipeline
> > > > effectively become a Terminal Adapter. But if this is the case, why buy the
> > > > pipeline. We can do it with ~$150 ISDN TA. We are using pipeline because
> > > > it's cost effective for a subnet running multiple machines and the router
> > > > performs better than the computer. However, functionality will come before
> > > > performance. If we cannot solve this problem, we will be forced to drop the
> > > > pipeline solution.
> > > 
> > > I totally dont understand what you mean by "The DNS effectively becomes
> > > the router", as they are two TOTALLY different things, doing two TOTALLY
> > > different functions, but your overall answer is NO.  Go buy a Motorola
> > > BitSucker Pro for $150, and save some cash.
> > > 
> > > Scott R. Chrestman
> > > System Administrator
> > > Netropolis Communications Corp.
> > > src@netropolis.net
> > > 
> > > ++ Ascend Users Mailing List ++
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> > > To get FAQ'd:	<http://www.nealis.net/ascend/faq>
> > 
> > ---------------End of Original Message-----------------
> > 
> > -------------------------------------
> > Name: Lou Melograna
> > E-mail: Lou Melograna <lmelogra@atrioncomm.com>
> > Atrion Communications Resources
> > 185-I Industrial Parkway
> > Branchburg, NJ  08876
> > Phone: 908.231.7777  ext.112
> > Fax: 908.231.8228
> > Date: 11/13/97
> > Time: 09:12:07
> > "When Quality Counts"
> > -------------------------------------
> > 
> > ++ Ascend Users Mailing List ++
> > To unsubscribe:	send unsubscribe to ascend-users-request@bungi.com
> > To get FAQ'd:	<http://www.nealis.net/ascend/faq>
> > 
> 
> ~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~
> 	Jake Messinger             	713-772-6690	jake@ams.com
> 	Advanced Medical Systems, Inc.			jake@uh.edu 
> 	8300 Bissonnet  #400		fax: 713-774-3498
> 	Houston, Texas  77074           http://www.ams.com/~jake
> ~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~

---------------End of Original Message-----------------

-------------------------------------
Name: Lou Melograna
E-mail: Lou Melograna <lmelogra@atrioncomm.com>
Atrion Communications Resources
185-I Industrial Parkway
Branchburg, NJ  08876
Phone: 908.231.7777  ext.112
Fax: 908.231.8228
Date: 11/13/97
Time: 11:39:04
"When Quality Counts"
-------------------------------------

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