Re: Private addresses on public network
From: Anders Pettersson (anders.pettersson@avitec.se)Date: 07/31/02
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To: Octavio / Super <alvarezp@doogie.ods.org> From: Anders Pettersson <anders.pettersson@avitec.se> Date: 31 Jul 2002 11:17:04 +0200
Octavio / Super <alvarezp@doogie.ods.org> writes:
> Hello, everybody!
>
> Let's say I have a network, whose computers are connected directly to
> the Internet (meaning that when they have a public IP address, they
> can connect to any place, with no firewall or NAT in between (only the
> corresponding router)).
>
> Now, let's say that I set some (or all, whatever) of those computers
> to have an IP address which does not correspond to my block, (either
> standard private addresses (e.g. 192.168.x.x) or any other
> non-standard IP address (e.g. 92.0.x.x which must belong to
> somebody)).
>
> Q: Is there any way of connecting to them from an external network? I
> mean, are they exposed to any security threat as if they were
> configured with their [normal] public IP address?
That's what the command route is for. By adding a route to your
network someone should be able to connect to any of those
machines. The same is true even if you have them sitting behind a
gateway, sometimes even with nat NAT (network address translation)
unless you do some firewalling.
-- Anders Pettersson, Test Engineer, AVITEC AB http://www.avitec.se/
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