Hi,

i was wondering is it possible to have:

   NET1  ---  ROUTER  ---  NET2
             /    \
            /      \ 
          NET3    NET4


and keep a machine on NET4, that would ask the router of IP/MAC pairs over
SNMP.

The problem is this, that i have a cisco router, with 4 internal networks,
and if someone does IP spoofing on NET1, with another source from NET1, i
am unable to verify if that was spoofed or not, without having a host in
that NET1 network.

What would solve my problem whould be an arpwatch like application that
would grab the MAC/IP pairs appearing on the interfaces (say over
SNMP) and keep track of them in a database, like arpwatch.

Any solutions for that?

Thanks,
Regards,
Maciej Soltysiak



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