Re: 192.168 - why?

On Fri, 25 Jul 2008 22:10:06 -0600, Joe Pfeiffer <pfeiffer@xxxxxxxxxxx> wrote:
AZ Nomad <aznomad.3@xxxxxxxxxxxxxxxxxxx> writes:

On Fri, 25 Jul 2008 21:51:06 -0500, Chris "Saundo" Saunderson <saundo@xxxxxxxxxxxxx> wrote:

Very true, but the use of RFC-1918 addresses is not limited to home
users. The Very Large Corporation I work for has been migrating from
publicly routable address space for servers in datacenters, and more
importantly, desktops, in order to

a) conserve IPv4 address space allocated to us, and;
b) improve routing internally, by allowing sane aggregation, and;
c) improving security by being able to drop RFC-1918 addresses from
inside the network at the border, as all routers that are connected to
the Internet at large should.

A corporation with 100,000 employees isn't going to need nonroutable
addresses. They're going to have a network topography a bit more
sophisticated than a $45 linksys.

True, but they're in a league where the reason to use non-routable IP
addresses is to limit external access -- another, very valid, reason.

Don't get me wrong, I really like the fact that I can ssh straight to
either of the machines sitting in my office. But if we were starting
from scratch and I were the guy designing the network, the only
external access would be to a relatively small number of exposed
machines.

If I ssh to work, it is via a vpn and my work's DNS server will give
me addresses that don't correspond to anything on the internet.
.

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