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Re: [Openvpn-users] Hardware acceleration



> ... interested to know how offloading the crypto to hardware affects overall scalability of OpenVPN, and how the performance/price works
> out compared to just adding more computers or processors.


Sometime back, I was involved in testing hardware 3DES because of the
miserable throughput of a software implementation. The increase was
substantial but was abandoned in favor of software AES-128. It is my
understanding that the "crypto overhead" of AES is less than 3DES by an
order of magnitude; successfully implemented AES-128 in 10mbit network
with minimal performance degradation. AES is quickly becoming the
defacto standard for may SSH implementations.

Raymond


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