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ALCON,
I am currently running both the RealSecure sensors and the Cisco IDSM
modules on my 6500s. This solution gives you the best of both worlds. What
one system doesn't catch, the other one does. When you find a signature that
is firing off on one and not the other, you write a custom signature. Due to
equipment limitations, I run RealSecure sensors on the outside of my
firewalls, on my DMZ's, and on my server vlan. I have three IDSM's covering
the other vlans. The server vlan ends up getting double coverage. I am also
running about 50 vlans and have never oversubscribed my IDSM's, but
sometimes the RealSecure sensors miss traffic. I don't have any of the Cisco
IDS appliances yet but I plan on purchasing a couple of 4210's later this
year. If you get the 4230, it can handle multiple vlans. This is just like
running McAfee and Norton on the same network. If you can afford them it
doesn't make sense not to have them both.

Carl W. Moore
Network Engineer
National Guard Professional Education Center

-----Original Message-----
From: sixty seven [mailto:ssixtyhotmail.com]
Sent: Monday, May 20, 2002 10:48 AM
To: issforumiss.net
Subject: Cisco IDS + RS IDS

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All,

Due to problems with switched LANs and VLANs, we are considering a Hybrid
solution with ISS Real Secure and Cisco 6500 based Cisco Secure Poloicy
Manager for IDS. Has anybody tried this b4.
The network in Q? has more than 50 VLANs with Cisco 2900, 3500 and 5500
upward of 600 in total. Spanning seems a bit unrealistic.
Any Ideas? GURUs out there!

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