Firewall Wizards mailing list archives

RE: Sliding/Shifting/Morphing firewalls


From: "Safier, Adam (GEIS)" <Adam.Safier () geis ge com>
Date: Wed, 10 Feb 1999 18:01:09 -0500

But what does it do for/to network support?

Adam

-----Original Message-----
From: cbrenton [SMTP:cbrenton () sover net]
Sent: Wednesday, February 10, 1999 3:24 PM
To:   Stout, Bill
Cc:   Firewall-wizards
Subject:      Re: Sliding/Shifting/Morphing firewalls

On Mon, 8 Feb 1999, Stout, Bill wrote:

What's the gurus opinions on firewalls which use randomly changing port
numbers for inbound/outbound traffic?

I assume you mean using random upper port numbers for source ports instead
of having the OS dish them out sequentially? If so it makes all forms of
attack that rely on source port spoofing that much more difficult to
implement.

Chris
-- 
**************************************
cbrenton () sover net

* Multiprotocol Network Design & Troubleshooting
http://www.amazon.com/exec/obidos/ASIN/0782120822/geekspeaknet
* Mastering Network Security
http://www.amazon.com/exec/obidos/ASIN/0782123430/geekspeaknet



Current thread: