> If you're in a really mean mood, you can put your neighbor behind your > masqueraded firewall and log all her activity. To do this, set up an alias > eth0:1 as 192.168.127.1 (or any other convenient reserved network not used > by yourself). Allow masquerading from this network. Set up dhcpd to > serve out addresses from 192.168.127.[2-254] to requests coming in on eth0 > (maybe eth0:1, dunno how broadcasts work with aliased adapters). Presto, > your machine gets all traffic from any neighbor who DHCPs over your link > (if you respond before the ISP's DHCP server) and masquerades it to the > 'net. Your neighbors don't notice anything wrong, but you can snoop 'em > at will.
If your cable modem is as simple as a hub you could probably snoop people's traffic without assigning them an IP. I think this is something a lot of people are going to be unaware of, and it's going to be a big security hole. On the other hand, it would make for a fun movie: "The cracker is somewhere in Chicago...maybe." Robert -- Robert de Forest [EMAIL PROTECTED] "Time flies like an arrow. Network Administrator (831) 460-4355 Fruit flies like a banana." Tapestry.net http://got.net/~crag/
