Great Circle Associates Firewalls
(February 1995)
 

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Subject: Re: Prevention of LOCAL spoofing/duplicate IP's?
From: carson @ cs . columbia . edu
Date: Wed, 1 Feb 1995 22:13:58 -0500
To: John Adams <jna @ concorde . com>
Cc: firewalls @ GreatCircle . COM
In-reply-to: <199502012204 . RAA11604 @ galaxy . concorde . com>
References: <199502012204 . RAA11604 @ galaxy . concorde . com>
Reply-to: carson @ cs . columbia . edu

>>>>> On Wed, 1 Feb 1995 17:04:43 -0500, John Adams <jna @
 concorde .
 com> said:
John> Is there any way to prevent this? ANYONE can edit their Winsock configuration
John> and make the IP address the same, and really hose your network... And this
John> is internally... How do you prevent this, short of spending TONS of money
John> on new hubs?

Well, we put the badly-behaved PCs on their own networks, and the routers
are smart enough to keep them honest about their IP addresses.  It also
keeps broken IP implementations from hosing you other boxes.

-- 
--
A Queen Trapped in a Butch Body is:
Carson Gaspar -- carson @
 cs .
 columbia .
 edu, carson @
 lehman .
 com



References:
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From: "Daniel O'Callaghan" <danny @ www . unimelb . edu . au>
Next: Re: Test Labs
From: matt @ uts . EDU . AU (Jas (Matthew K))
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From: scott @ tandem . com (mueller_scott)
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From: ted . doty @ nsco . network . com

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