emulate ip's in a network to protect it

[soulwarrior]

Hello,

I once found an interesting program which could emulate or lets say take away every ip which isn't used be a computer.
In that way, nobody could just easily hook up a laptop on the network, because all ip's are already take away.
Think this program did also scan, if anybody tried to fiddle around with the ip's simulated by the program.

Unfornationaly I can't remember the name of the program, nor did I find it back by searching with google.

But maybe somebody knows this program???

hope so

[soulwarrior]

I found it back

It is called LaBrea and can be found here:
http://labrea.sourceforge.net/labrea-info.html.

Short description of the product:

[paranode]

Ah, yes this technique is called the LaBrea Tarpit. It waits just under the maximum timeout for connections before responding. This helps slow the propagation of worms mostly, or makes people really frustrated when scanning your network for holes.
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Meh.