Snort with three interfaces attached to diferent network segment

[artiman () cable net co]

Hi Folks, I have the following question, I just have one machine to 
monitor the activity on three diferent network segments (Redhat 9), so 
I plan to to install 3 NIC on the snort machine, setup the interfaces 
on promiscous mode without IP information and start to listen each 
segment, I'm kinda worried for the security implications because I'm 
creating a physcial path between the Internet, DMZ and MZ zones, so 
in  theory there is a small probablity of bypass the Firewall using 
the snort machine.
Can somebody explain what is the risk that I'm facing using this 
architecture, How can I make sure 100% that the Linux will not route 
packet between different segments, In wich ways a Hacker can exploit 
my network ???

thanks

Artiman 



-------------------------------------------------------
This SF.Net email is sponsored by: INetU
Attention Web Developers & Consultants: Become An INetU Hosting Partner.
Refer Dedicated Servers. We Manage Them. You Get 10% Monthly Commission!
INetU Dedicated Managed Hosting http://www.inetu.net/partner/index.php
_______________________________________________
Snort-users mailing list
Snort-users () lists sourceforge net
Go to this URL to change user options or unsubscribe:
https://lists.sourceforge.net/lists/listinfo/snort-users
Snort-users list archive:
http://www.geocrawler.com/redir-sf.php3?list=snort-users