From: Tim (tim-pentest@sentinelchicken.org)
Date: Sun Sep 11 2005 - 20:28:46 EDT
> Lets say we have a machine running critical business applications
> connected to the enterprise network on 2 NICs. From an assessment/audit
> point of view, is it necessary to scan both NICs using assessment tools
> like NMap and Nessus? Will both scan results produce the same findings
> (as in same ports and services open)?
If you want to be sure, you really do need to scan both. Many services,
at least in the Unix world, allow one to easily specify which IP or
interface the service should listen on. Many lazy administrators don't
bother to do this, and some services don't support it, but that's no
guarantee.
If these two NICs are actually on the same network segment, then perhaps
you don't need to worry about scanning both, but in any other situation,
or if you are paranoid about missing a service, definately do.
tim
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