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From: "Fergie" <fergdawg@netzero.net> Date: Fri, 13 Jan 2006 04:38:57 GMT To: smb@cs.columbia.edu Cc: nanog@nanog.org Errors-To: owner-nanog@merit.edu This is why AAA is so important. :-) - ferg -- "Steven M. Bellovin" <smb@cs.columbia.edu> wrote: In message <20060112.195851.1587.15308@webmail05.lax.untd.com>, "Fergie"= writes : > >RFC2827/BCP38? > 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 -- "Fergie", a.k.a. Paul Ferguson Engineering Architecture for the Internet fergdawg@netzero.net or fergdawg@sbcglobal.net ferg's tech blog: http://fergdawg.blogspot.com/
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