Ascend Archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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



In this case, I don't think it's even necessary though....see my other
replies.

At 10:35 AM 11/13/97 -0600, Jake Messinger wrote:
>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 ++
>> > 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 ++
>> 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
>~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~
>
>++ Ascend Users Mailing List ++
>To unsubscribe:	send unsubscribe to ascend-users-request@bungi.com
>To get FAQ'd:	<http://www.nealis.net/ascend/faq>
>

Kevin


++ Ascend Users Mailing List ++
To unsubscribe:	send unsubscribe to ascend-users-request@bungi.com
To get FAQ'd:	<http://www.nealis.net/ascend/faq>


References: