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    OpenSSH since 7.0 doesn't accept hostkey ssh-dss and you must add it, similarly since 8.8 it doesn't use client ssh-rsa and you must add that with -oPubkeyAcceptedAlgorithms=+ssh-rsa. (It will still use client RSA key with the newer rsa-sha2 algorithms, but your server is obviously old and doesn't support those.) See unix.stackexchange.com/questions/410468/… and cross serverfault.com/questions/1092998/… . Commented Apr 16, 2022 at 1:45
  • What's running on the server side? It's clearly out of date and doesn't support any modern algorithms. Commented Apr 16, 2022 at 11:47
  • @dave_thompson_085, Thanks for the great answer, I think this should help. Commented Apr 17, 2022 at 3:26
  • @bk2204, yes the server side ssh is older than what I have in machine. Commented Apr 17, 2022 at 3:26
  • @dave_thompson_085, Thank you, this solved the problem. Commented Apr 17, 2022 at 12:07