Hi

I'm about to add stunnel to my buildroot embedded project (ARM926EJ-S) and I was hoping the list could answer a few performance questions?

I've been looking for a way to encrypt the connections between my embedded units and my server. From what I understood about openvpn, the server starts to give problems beyond 1024 "concurrent sessions" .... I'm looking at a design that can handle 4K concurrent sessions....although it'll take a few years to get that big.

My embedded devices have a GSM modem and setup a ppp0 interface over gprs. I'm considering stunnel in the hope that I could have up to 3000 stunnel connections coming into my servers. I say 3K because by the tike I reach this figure I hope to have implemented better switches and off load the overhead of the encrypted connection to the switch.

The requirement is that the embedded "non-ssl aware client" will be able to communicate with the server over a secure tunnel.

Am I completely on the wrong road? .... could stunnel cater for something like this?

Thanks in advance!