Re: BUG #13578: use cipher=NULL-SHA256 error when connect

digoal@126.com writes:
> why PostgreSQL 9.4.4 cann't use eNULL or NULL ciphers?

I believe we intentionally disallow that, because those "ciphers"
actually mean transmission in cleartext.  If you're okay with
unencrypted connections, you needn't bother with SSL at all.

            regards, tom lane