>It anyone using intruder detection programs out there?   Any
>recommendations?
>

If there is an IDS list these questions would be more appropriate there...

We are using both ISS Real Secure and Cisco's Net Ranger Director - there
are pluses and minuses for both.  Both have GUI based management, both are
non-intrusive (monitor the network traffic on the side without having the
packets stop at the machine while they are being inspected).  

ISS Real Secure is somewhat more robust and currently allows automatic
changes to certain Firewall products i.e. FW-1, and is good for a local
monitoring situation.  It currently does not have the capabilites for
multiple locations of monitoring (a hierarchy), due to the encryption
between detection tool and manager.  And is somewhat more difficult to
learn.  It is recommended that both peices run on their own boxes due to the
amount of traffic.

http://www.iss.net/prod/rs.php3

Net Ranger Director is currently only available as a plug in to HPOV
(solaris or nt), but will be available as a standalone in the future.  The
sensor can be a standalone box (solaris) or in July as a component on
certain Cisco routers in a slightly reduced capacity.  NRDirector does allow
for a heirarchy, and event correlation to a higher manager to reduce
bandwidth usage.

http://www.cisco.com/warp/public/cc/cisco/mkt/security/nranger/prodlit/netra
_ov.htm

As with any Security product you need to evaluate the products and based on
your system needs determine what you need to use.

Heather Bard
GTE
Systems Security Engineer

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All above statements are personal opinion.
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