Re: tailoring rules on internal versus external networks

[Erik Fichtner <emf () servervault com>]

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On Tue, Aug 10, 2004 at 02:27:52PM -0000, Tom Wentworth wrote:
> I have been tasked with tailoring rulesets on a large collection of sensors (more than a hundred).  I need to come up 
> with a  baseline set of rules for sensors on both internal and external (internet exposed) segments.  Has anyone come 
> up with baseline rulesets for these two very general situations?  I have some ideas about which rules I think are 
> appropriate, but could really benefit from someone else's experience.  Any links or advice greatly appreciated.

You might want to use m4 and a sensor(-type) specific configuration file (ifdef's)
so you can generate the config automatically based on local decisions.  No two 
sensors are ever alike.  

Unless you're doing false positive reduction at a central location, and you
happen to be really good at that already.

- -- 
Erik Fichtner
Principal Engineer, Information Security, ServerVault Corp.
703-652-5900
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