Re: RFC: Including Mozilla recommended cipher suites in mod_ssl conf file

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On Thu, Dec 04, 2014 at 11:31:04AM -0500, Miloslav Trmač wrote:
> ----- Original Message -----
> > The default settings for mod_ssl (for use in httpd) is:
> > 
> > SSLCipherSuite HIGH:MEDIUM:!aNULL:!MD5
> > 
> > This isn't a great default (for many reasons).  I'd like to propose we
> > provide the default ciphers suites as defined by Mozilla[0] in the
> > configuration file with the Intermediate compatibility cipher suite
> > uncommented:
> 
> > <quote>
> > #This is the modern cipher suite that provides a higher level of security and
> > is compatible with the latest browsers.
> > #SSLCipherSuite
> > ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!3DES:!MD5:!PSK

<removing unhelpful and unuseful input>

> Can what you want to do be done using the CryptoPolicy mechanism?  (And should it be the default?)

Yes, and thank you for reminding me of this new, upcoming feature.

There will always be a default and that default should be something sane that both provides protection and compatibility.  The current default leaves something to be desired with respect to security.  Using the recommendations provided by Mozilla you get both in a balanced way.  I could see the three recommended cipher suites lists being used as a low, default, and high security ratings within the CryptoPolicy.

- -- Eric

- --------------------------------------------------
Eric "Sparks" Christensen
Red Hat, Inc - Product Security

sparks@xxxxxxxxxx - sparks@xxxxxxxxxxxxxxxxx
097C 82C3 52DF C64A 50C2  E3A3 8076 ABDE 024B B3D1
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