The newer flexresp2 for snort and the reset stuff in SnortInline has the
ability to send packets out at layer 2, bypassing the need for an IP
address.
-----Original Message-----
From: Graeme Connell [mailto:gconnell@middlebury.edu]
Sent: Wednesday, September 29, 2004 8:42 AM
To: Vijai K (Infosec) - CTD, Chennai.
Cc: focus-ids@securityfocus.com; Srinivasa Rao Addepalli
Subject: Re: IDS Sensor operation
An interface in promiscuous mode can still have an IP address. Just run
ifconfig <interface> promisc
and, voila! A promiscuous interface. It only means that it registers
all packets that hit it. So to answer your question: An IPS can sniff
traffic and send configuration information on the same interface. Hope
this helps.
--Graeme Connell
Vijai K (Infosec) - CTD, Chennai. wrote:
Hi folks
Basically sensors operates with promiscuous mode interface for
monitoring
data,rite
But there is an optionality in an IDS to alert the firewall
(reconfigure)to
block the intrusion IP, and also to kill the session or connectionby
the
sensor itself.
this we see in Realsecure Network sensor 7.0 where there is a option
called
RSKILL.
But the question is how is it possible for a interface in promiscuous
mode
to act like this since there is no binding in the
interface(TCP/IP,etc).
Did it uses other NIC which is for management purpose???
Hope u all understand the question
Regds
Vijai.K
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