[tlug] SSH set up issues

["Stephen J. Turnbull" <steve@example.com>]

Charles Muller writes:

 > Based on various suggestions I found on the web, I was able to work 
 > around it by inserting the following text in .ssh/config:
 >   Host linserv
 >      HostName 192…..
 >      User acmull5
 >      HostKeyAlgorithms +ssh-rsa
 >      PubkeyAcceptedKeyTypes +ssh-rsa
 > 
 > So I now I can log on with:
 > 
 >     ssh linserv
 > 
 > …but I would prefer to be able to log on with my original method of
 > SSH followed by the actual server address number.

Besides Darren's suggestion of "Host <ip address>",

ssh -o 'HostKeyAlgorithms +ssh-rsa' -o 'PubKeyAcceptedKeyTypes +ssh-rsa' ...

should work (ssh(1) doesn't give examples of the syntax for the -o
option so I'm just guessing that the key-value separator is ' ').
Obviously you would want to make an alias for that.

That said, at your convenience you should probably go to the server
and generate ecdsa and/or ed25519 keys for the server, because as you
upgrade you're going to find more and more of your hosts are
deprecating ssh-rsa and ssh-dss host keys (both for ssh and sshd).
Example:

ssh-keygen -t ed25519

and leave the pass-phrase empty.

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