Re: Landing a larger-than-release change (distrusting SHA-1 signatures)

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On Wed, Mar 09, 2022 at 02:54:40PM +0100, Dmitry Belyavskiy wrote:
> At least RHEL 6 issues can be fixed server-side generating an ecdsa key...

If you can log in ...

This doesn't really work for us because of the way virt-v2v works --
it wants to ssh to the RHEL 5/6/7 server to fetch some files with as
little pre-configuration as possible.

Rich.

> On Wed, Mar 9, 2022 at 2:47 PM Richard W.M. Jones <rjones@xxxxxxxxxx> wrote:
> 
>     Previous tightening of crypto defaults caused problems with us
>     connecting to older ssh servers.
> 
>     I am particularly interested / worried about sshd from RHEL 5, 6 & 7
>     for virt-p2v and virt-v2v conversions.  This broke before, requiring
>     us to advise users to set the global policy for the machine to LEGACY
>     (thus ironically weakening crypto for everything).
> 
>     Also I have some ancient network equipment that cannot be upgraded but
>     needs older ssh protocols.  I can't connect to it from Fedora unless I
>     set the crypto policy to LEGACY.
> 
>     Anyway I'm wondering if the SHA-1 change will impact ssh further?
> 
>     Rich.
> 
>     --
>     Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/
>     ~rjones
>     Read my programming and virtualization blog: http://rwmj.wordpress.com
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> 
> 
> --
> Dmitry Belyavskiy

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-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-builder quickly builds VMs from scratch
http://libguestfs.org/virt-builder.1.html
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