Check out "arpwatch."  It will monitor your network and tell you when a
new computer has joined.

http://www-nrg.ee.lbl.gov/



On Thu, 27 Dec 2001, Technomage wrote:

> yes,
> I realize this.
> thats why I'd like to be able to use routable affressses on the wireless
> side. this way, if it traces back, it will go all the way to the
> offending
> machine and I will appear as only a link in the chanin (this may require
> agreements with cox.com and a few others to limit liability issues).
>
> it might not be a bad idea if some security could be implimented to
> detect
> unusual activity and lock out the offending MAC address (thus preventing
> repeat
> problems be preventing that network interface from reconnecting with a
> new
> DHCP assigned address). That appears very simple on the surface and may
> require
> a lot of filling in on the details to really make it workable.
>
> Technomage