Once upon a time, Alice Wonder <alice@xxxxxxxxxxxxxx> said:
> They recommend setting the following:
>
> KexAlgorithms curve25519-sha256@xxxxxxxxxx
>
> I don't even see that directive in my sshd config to set it, I
> suppose it may be one that is manually added when needed but I want
> to verify it actually means something in CentOS 7 ssh.
>
> Also I'm a little worried that maybe curve25519 is one of the curves
> that Red Hat (and thus CentOS 7) doesn't support due to patent
> concerns.
That is supported in the CentOS 7 version of OpenSSH. Look at the man
page for sshd_config and you'll see the KexAlgorithms option listed and
its valid values. You can always see what your exact copy and config of
OpenSSH are using by running "sshd -T".
However, if you set it as above, you would _only_ be able to connect
with that algorithm, and not all SSH clients support that (even for
example OpenSSH on CentOS 6).
--
Chris Adams <linux@xxxxxxxxxxx>
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