Re: Intrusion Detection

From: Adam Shostack (adamat_private)
Date: Tue Apr 14 1998 - 06:40:46 PDT

  • Next message: Marcus J. Ranum: "Re: Intrusion Detection"

    shantanu bhattacharya wrote:
    [Charset iso-8859-1 unsupported, filtering to ASCII...]
    | Hi,
    | 
    | What are the kind of Intrusions an Intrusion Detection software can
    | detect? What all it cannot? Also, specify the reasons. 
    
    	There's an upcoming conference on this very question.  I can't
    find the URL offhand.
    
    	I believe intrusion detection to be a misnomer, and that the
    really useful class of software is attack detection.  Attacks (land,
    teardrop, phf, password file sucking) are relatively easy to detect
    with network sniffing software.  Intrusions are hard to detect with
    network sniffers because, done properly, they look pretty much like
    real users.  Most systems I've broken into, I get in through social
    engineering. Make a few phone calls.  Log based analyzers do a better
    jobs of this; they have less data to munge through, and can build up
    'expected' behavior patterns.
    
    
    
    -- 
    Just be thankful that Microsoft does not manufacture pharmaceuticals.
    



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