DSL Monitoring

[Darren Young <darren_young () yahoo com>]

I'd like to start monitoring my home DSL connection
with Snort, but am not sure which interface to watch.
Sitting behind my NetDSL modem is a RedHat Linux
system that runs PPPOE to establish a connection to
Earthlink. The interface eth1 is physically attached
to the DSL modem and ppp0 is the one that the PPPOE
software brings up for the actual connection.

When I apply firewall rules, I add them against the
ppp0 interface, would I use the same one for Snort or
the eth1 physical interface? Should I place a hub on
the same connection as the DSL and add another
interface just for Snort monitoring?

Any pointers would be great.

Thanks,



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************************************************************
** Darren Young                                           **
** UNIX, Network & Security Consultant                    **
** YHL Solutions                                          **
** darren_young () yahoo com                                 **
** PGP: 6BAF 11AC D6D4 4F4F A94A C5AC 5926 5FC1 8A9F CC6D **
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