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Web design & hosting forum: Denial Of Service attack in asynchronous communication

by: maver1k January 26, 2013 12:55 PM PST

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Denial Of Service attack in asynchronous communication

by maver1k - 1/26/13 12:55 PM

Is Low rate DOS attack (unintended) possible through asynchronous communication? Consider this scenario:

I have a client server application were there is a WAN communication between the client and server. Client makes synchronous calls to the service and so waits for a response. Now there happens some nasty WAN issue causing the latency to spike. In this case the server might wait for the packets to arrive while the client could timeout and start a new connection. If this happens fast enough the server might get saturated with connections causing legitimate connection requests to be dropped causing DOS.

Now if the communication is asynchronous the client will not wait for the response and repeated attempts wont happen. This seems to protect from DOS?

Am I correct here? or where did I go wrong ?


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IP DOS is always possible.

by R. Proffitt Moderator - 1/26/13 8:36 PM

In Reply to: Denial Of Service attack in asynchronous communication by maver1k

Without getting into the full IP protocols, sure, there are plenty of DOS issues. And if anyone thinks that async vs. other will fix this, I have a wide selection of bridges for them to look over.
Bob


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