Great Circle Associates Firewalls
(September 1996)
 

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Subject: Re: IP spoofing
From: Adam Shostack <adam @ homeport . org>
Date: Sun, 22 Sep 1996 16:37:42 -0500 (EST)
To: lyndond @ sentinet . co . uk (Lyndon David)
Cc: firewalls @ GreatCircle . COM
In-reply-to: <01BBA8AE . 126C8BA0 @ pc . sentinet . demon . co . uk> from "Lyndon David" at Sep 22, 96 05:47:05 pm

Lyndon David wrote:
| Not only would I junk and log packets claiming to be from my internal
| network but also junk and log packets that have bits set in the IP options
| header. This would not protect against SYN attacks, just make it
| more difficult for people to claim to be someone else whilst doing it.

Junking packets with options prevents people from using IPsecurity.

Adam

-- 
"It is seldom that liberty of any kind is lost all at once."
					               -Hume



References:
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From: Ryan Russell/SYBASE <Ryan . Russell @ sybase . com>
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From: David Vincenzetti <vince @ cryptonet . it>
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From: Lyndon David <lyndond @ sentinet . co . uk>
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From: Ian Miller <firewalls @ scientia . com>

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