Are we really this helpless? (Re: isprime DOS in progress)

Mark Andrews Mark_Andrews at
Sun Jan 25 01:01:46 UTC 2009

In message <8C5F1FEC-FF51-4BA2-A762-C13BC275E806 at>, David Conrad writes:
> It would seem that as ISPs implement DPI and protocol-specific traffic  
> shaping, they damage the arguments that they can make claiming they  
> have "common carrier" status with the inherent immunities that status  
> provides.  I can hear the argument now: if an ISP can throttle  
> BitTorrent (or whatever) for specific nodes, why can't they also limit  
> the source addresses of packets coming from those nodes?

	They can and should.  I suspect many of them do as they
	usually apply these filters to home networks.

	BCP 38 is ~10 years old now.  It should have been factored
	into the purchasing decision of all the current equipement.
	If it wasn't then the operator was negligent.

> Regards,
> -drc
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at

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