ISP port blocking practice
bill at herrin.us
Fri Sep 3 15:23:00 UTC 2010
On Thu, Sep 2, 2010 at 11:04 PM, Daniel Senie <dts at senie.com> wrote:
> Ingress filtering is the correct tool for the job.
Not really. Ingress filtering only ever protected you from being the
source of spooding attacks, not the destination. The point of Zhiyun's
results is that it doesn't fully protect you from being the source
Frankly, Zhiyun offers the first truly rational case I've personally
seen for packet filtering based on the TCP source port. You should
give his work more careful scrutiny.
William D. Herrin ................ herrin at dirtside.com bill at herrin.us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004
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