My question is How can you sniff packets on a link that your machine is NOT on ie NOT on the same subnet??
It's not the subnet that's important .. it's the broadcast network (usually a VLAN). ARP spoofing is the standard way of doing this, but ARP isn't (usually) forwarded across a router.
You can't (passively anyway) sniff packets from a host in another VLAN without some special trickery.
/mike. _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
