nanog mailing list archives

Re: Pros and Cons of Cloud Computing in dealing with DDoS


From: Sean Donelan <sean () donelan com>
Date: Sun, 8 Nov 2009 17:27:01 -0500 (EST)

On Sun, 8 Nov 2009, Dobbins, Roland wrote:
 if the discussion hasn't shifted from that of DDoS to EDoS, it
should.

All DDoS is 'EDoS' - it's a distinction without a difference, IMHO.

DDoS costs opex, can cost direct revenue, can induce capex spends -
it's all about economics at bottom, always has been, or nobody would
care in the first place.  And look at click-fraud attacks in which the
miscreants either a) are committing fraud by causing botnets to make
fake clicks so that they can be paid for same or b) wish to exhaust a
rival's advertising budget when he's paying per-impression.  Plain old
packet-flooding DDoSes can cost victims/unwitting sources big money in
transit costs, can cost SPs in transit and/or violating peering
agreements, etc.

There's no need or justification for a separate term; Chris Hoff
bounced 'EDoS' around earlier this year, and the same arguments apply.

The so-called "E"DOS is easy to solve. Just re-negotiate your contract with the cloud service provider to exclude that traffic from your bill. After all, if the cloud security provider's security is great, they shouldn't have a problem giving their customers credit for those problems which the cloud solves. No more "E" problems for thec customer, the DOS risk is shifted to the service provider. But now the service provider still needs to solve the same problem.

Oh, the cloud service provider won't negotiate, won't give you unlimited service credits, want to charge extra for that protection, don't want to make promises it will work, and so on :-)

The same unsolved problems from the 1970's mainframe/timesharing era still haven't been solved with virtualization/cloud/etc.


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