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When trying to do: ssh -oBatchMode=yes -4 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null

ssh fails when the password of the remote linux user starts with a special char(for example !Passw0rd) and shows the following error: "Permission denied (publickey,gssapi-keyex,gssapi-with-mic)"

When creating a user with password such as Passw0rd! it works properly.

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    What exactly is your question?
    – Ramhound
    Commented Dec 9, 2020 at 14:12
  • how can it be solved? why it happens?
    – Qknow123
    Commented Dec 9, 2020 at 14:52
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    There's something fishy. The permission denied message does not mention password. It mentions publickey; this method can ask for the passphrase. And it mentions gssapi-*; this one I don't know, but it seems it shouldn't ask. Anyway, the password method was not used. So maybe you were asked for something else. Or maybe the question contains misleading or incomplete information.
    – Kamil Maciorowski
    Commented Dec 9, 2020 at 20:08

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I am not sure, but I have tried your example on my RHEL 7 servers running openSSH version 7.4pl-16 and I did not have any error using same password as you starting with !...

Maybe you have a typo with the password or keyboard settings? Try to use scp for example and confirm if the problem still exist even using scp?

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