[Bridge] Encrypting Bridge?
ML at Bartschnet.de
Tue Aug 24 09:09:42 PDT 2004
On Di, 24.08.2004, 17:36, Josh Wyatt sagte:
>> tunnel at layer 2 can be really useful when it comes to bandwidth
and/or latency matters.
> There is already a tool to do layer-2 bridging with encryption. Check
> I use it a great deal to do layer-2 bridging. It works with the kernel
> driver and works very well. It can use TCP or UDP as the transport, offers
> compression, etc. Key management is up to you, however.
As it uses tun/tap I assume compression/encryption is done in user-space,
which means increased latency (I want to use it von IP/Video-telephony).
As VIA claims the PadLock function of the Nehemia cores achieves 12,5
GBit/s with AES at 1 GHz CPU speed and a TDP of 7 Watts, using a
encryption in kernel-space with the PadLock function would mean that you
can en-/decrypt several 100 MBit/s tunnels with a 200,- EUR ITX-machine -
without big latency!
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