Firewall Wizards: Re: stealth firewalls

["Volker Tanger" <volker.tanger () discon de>]

ark () eltex ru wrote:

> nuqneH,

HIqIm!   {{;-)


> VPN peers are not required to be visible from VPN itself.
>
> You can build a bridge that will take packet from (bridging) interface 0 on
> machine A, encapsulate and encrypt it, send it via interface 1 to machine B's 
> interface 1, that will decrypt it and send out via interface 0 on machine B,
> and vice versa.

Yes - but A1 and B1 have visible IP interfaces to the rest of the world 
between them - thus A and B are no longer stealth firewalls by 
definition? At least if using standard VPN like IPsec?
As for A0 and B0, yes, that part was understood. Albeit I prefer 
"proper" (i.e. normal) routing over bridging. Makes debugging network 
connections easier IMHO.
Bye
        Volker

--

Volker Tanger  <volker.tanger () discon de>
 Wrangelstr. 100, 10997 Berlin, Germany
    DiSCON GmbH - Internet Solutions
         http://www.discon.de/

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