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Re: BLS FastAccess internal tech needed
From: "Steven M. Bellovin" <smb () cs columbia edu>
Date: Thu, 12 Jan 2006 23:09:13 -0500

In message <20060112.195851.1587.15308 () webmail05 lax untd com>, "Fergie" writes


The problem is that an ISP can do all the source filtering it wants, 
but if it only blocks SYNs to port 25 all it takes is one unfiltered 
dial-up to spoof that ISP's addresses.

                --Steven M. Bellovin, http://www.cs.columbia.edu/~smb

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