On Thu, Oct 31, 2024 at 7:40 PM Max Pyziur <p...@brama.com> wrote:
>
> > On 10/31/2024 1:32 PM EDT Charlie Dennett <cdenn...@gmail.com> wrote:
> >
> > >  /etc/ssh/ssh_config line 57: Bad key types 
> > > 'ssh-rsa,ssh-dss,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519'.
> > >  /etc/ssh/ssh_config line 58: Bad key types 
> > > 'ssh-rsa,ssh-dss,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519'.
> > >  /etc/ssh/ssh_config: terminating, 2 bad configuration options
> > >
> > >  I know that this is an occasional occurrence post upgrade.
> > >
> > >  Thank you for any and all advice.
> >
> > Just some guesswork here. On my system /etc/ssh/ssh_config includes other 
> > files (which includes other files). I found the list of key types listed in 
> > /etc/crypto-policies/back-ends/openssh.config (which is a sym link to 
> > /usr/share/crypto-policies/DEFAULT/openssh.txt). I'd check in that 
> > back-ends directory (and the DEFAULT directory the link points to) and see 
> > if there is a file ending in .rpmnew. Sometimes a package update will add 
> > that to a file name if the original file has been changed. If so, you can 
> > replace the file with the newer version.
> >
> > Also, those files come from:
> >
> > rpm -q --whatprovides /etc/crypto-policies/back-ends/openssh.config
> > crypto-policies-20241010-1.git8baf557.fc41.noarch
> >
> > You can always try reinstalling that package.
> > As I said, this is just some guesswork.
>
> Indeed, there was a ssh_config.rpmnew file that was present. Doing an sdiff 
> -s, the following results show up:
> root@Gryphon:/etc/ssh# sdiff -s -w 180 bak/ssh_config ssh_config
> #       $OpenBSD: ssh_config,v 1.35 2020/07/17 03:43:42 dtucker Exp $         
>         | #       $OpenBSD: ssh_config,v 1.36 2023/08/02 23:04:38 djm Exp $
> #   CheckHostIP yes                                                           
>         | #   CheckHostIP no
>                                                                               
>         <
> HostKeyAlgorithms 
> ssh-rsa,ssh-dss,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-e <
> PubkeyAcceptedKeyTypes 
> ssh-rsa,ssh-dss,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256, <

You might consider using `rpmconf -a` in the future.[1] And the other
post-upgrade tasks are helpful, too.

> Backup the old ssh_config, push ssh_config.rpmnew to ssh_config, and things 
> work.

[1] 
<https://docs.fedoraproject.org/en-US/quick-docs/upgrading-fedora-offline/#sect-update-system-configuration-files>

Jeff
-- 
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