HTTP Header Reading with iRule?

Thanks very much for the detailed answers guys.

By the sounds of it, we do really need to be terminating the SSL traffic, even if we re-encrypte it to the back-end servers.

Assuming we do this, where can we go and what's the best configuration? I have tried (and failed) with a simple HHTP profile alone.

Also, in terms of load (cpu, memory) etc.. does SSL termination put much strain on an F5?... We're looking at the lower spec ones initially.

Thanks,

J