Why no SSL ? — Varnish version 4.0.0 documentation
Poul-Henning Kemp details why Varnish doesn’t do SSL — basically due to the quality and complexity of open-source SSL implementations:
There is no other way we can guarantee that secret krypto-bits do not leak anywhere they should not, than by fencing in the code that deals with them in a child process, so the bulk of varnish never gets anywhere near the certificates, not even during a core-dump.Now looking pretty smart, post-Heartbleed.
(tags: ssl tls varnish open-source poul-henning-kemp https http proxies security coding)