[CentOS] Notes on openssh configuration
Leonard den Ottolander
leonard at den.ottolander.nl
Sat Jan 28 00:17:58 UTC 2017
On Fri, 2017-01-27 at 13:56 -0800, Gordon Messmer wrote:
> On 01/27/2017 10:59 AM, Leonard den Ottolander wrote:
> > https://en.wikipedia.org/wiki/MD5 seems to disagree:
>
>
> No, it doesn't. That page links to RFC 6151, which notes:
>
> "It is not urgent to stop using MD5 in other ways, such as HMAC-MD5"
>
> There's nothing wrong with disabling hmac-md5 in your own
> configurations. I do it. But having it enabled is not considered by
> experts to be a flaw, and it should not be alarming.
Six years have gone since md5 is considered broken. I find the fact that
MD5 is still configured as the default HMAC alarming in itself as it
indicates a lack of proactiveness that we so bitterly need in this day
and age of heartbleeds and the like. I consider it a faulty default.
This is a broken primitive. It needs to be phased out so it should not
be the default configuration. That's just common sense. No RFC can beat
that ;-) .
Regards,
Leonard.
--
mount -t life -o ro /dev/dna /genetic/research
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