Re: Addressing a machine behind the router without port forwarding or DMZ

[Pascal Hambourg <pascal.mail@plouf.fr.eu.org>]

Hello,

Dotan Cohen a écrit :
> 
> Assuming a LAN with a router and three machines:
> 10.0.0.1 Router
> 10.0.0.2 Computer1
> 10.0.0.3 Computer2
> 10.0.0.4 Computer3
> 
> The router sits on an outside IP address of 123.45.67.89. There is no
> DMZ or port forwarding assigned on the router to any of the other
> machines.
> 
> Is there any way an individual from outside the LAN could access a
> resource (Apache for instance, or SSH) on Computer1 assuming that he
> knows Computer1's LAN IP address?

Yes, if the individual sits just outside the router (no other router
between them) and the router allows communication between computer1 and
the outside.

> Would this this be possible if he
> had access to Computer1 and could configure it somehow (without
> configuring the router)?

Yes, if the router allows communication between computer1 and the outside.