[CentOS] Apache + SSL: default configuration rated "C" by Qualys Labs

[James Hogarth]

On 26 April 2017 at 13:16, Steven Tardy <sjt5atra at gmail.com> wrote:
>
>> On Apr 26, 2017, at 2:58 AM, Nicolas Kovacs <info at microlinux.fr> wrote:
>>
>> The site is rated "C"
>
> The RHEL/CentOS out-of-the-box apache tls is a little old but operational. This Mozilla resource is excellent for getting apache tls config up-to-date.
>
> https://wiki.mozilla.org/Security/Server_Side_TLS

I'm not 100% on any differences in ciphers available, but I don't
think there should be much difference between EL7 and Fedora.

This config gets my an A+ rating on the sslabs test:

SSLEngine on
SSLProtocol all -SSLv2 -SSLv3
SSLCipherSuite "EECDH+aRSA+AESGCM EECDH+aRSA+SHA384 EECDH+aRSA+SHA256
EECDH+aRSA+RC4 EECDH EDH+aRSA !aNULL !eNULL !LOW !MEDIUM !SEED !3DES
!CAMELLIA !MD5 !EXP !PSK !SRP !DSS !RC4"

<IfModule mod_headers.c>
      Header always set Strict-Transport-Security "max-age=15768000;
includeSubDomains; preload"
</IfModule>

https://www.ssllabs.com/ssltest/analyze.html?d=www.hogarthuk.com

IIRC the Red Hat defaults are somewhat conservative on their
limitations in order to simplify and maximise client connectivity - as
some stuff (especially java apps or older mobile devices) tend to
struggle otherwise with only a strict set of secure ciphers.