Re: IP NAT Inside and outside on the same interface

From: Ron.Fuller@xxxxxx
Date: Fri Aug 04 2000 - 08:11:18 GMT-3


   

I don't think you can do this. The interface must be one or the other, not
both. You can use policy routing to a loopback to work around this. We
did this the other night in our study group. The scenario was one with DSL
or cable, where you have a router with one ethernet with a public address,
but this ethernet is also connected to your inside network as well. Use
secondary addresing for the internal addressing, use the "real" IP address
for the primary address and do policy routing to NAT out the inside address
to the outside. Loopbacks can participate in NAT. Ugly, but it worked well
and not very secure as far as a good security design goes.

HTH!
Ron Fuller, CCIE #5851, CCDP, CCNP-ATM, CCNP-Security, MCNE
3X Corporation
rfuller@3x.com

                    Padhu@steinro

                    e.com To: ccielab@groupstudy.com

                    Sent by: cc:

                    nobody@groups Subject: IP NAT Inside and outside
 on the same interface
                    tudy.com

                    08/04/00

                    01:32 AM

                    Please

                    respond to

                    Padhu

Has anyone heard about this or tried ? Thanks.

Cheers,Padhu



This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 08:24:21 GMT-3