Ascend Archive
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Re: (ASCEND) Q. Can you run servers behind Pipeline (running NAT)?
On Thu, 13 Nov 1997, Kevin Smith wrote:
> That's exactly what NAT is doing...
Oh I thought he was talking about spoofing other REAL ip addresses, just
bogus to him. ;-) Yes NAT is THAT.
>
> At 09:12 AM 11/13/97 -0500, 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?
> >
> >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 ++
> >> To unsubscribe: send unsubscribe to ascend-users-request@bungi.com
> >> 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 ++
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> >To get FAQ'd: <http://www.nealis.net/ascend/faq>
> >
>
> Kevin
>
>
> ++ Ascend Users Mailing List ++
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> To get FAQ'd: <http://www.nealis.net/ascend/faq>
>
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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
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