keys | IT Quicktasks

Converting a Putty generated public key to OpenSSH

2020-04-05 · 1 min read · ssh keys putty conversion ·

If you see a public key like below, chances are, it's generated using PuttyGen in Windows. 1---- BEGIN SSH2 PUBLIC KEY ---- 2Comment: "rsa-key-20200101" 3AAAAB3NzaC1yc2EAAAABJQAAAQEArPVm4pY6eNaXFay32YHRdu96PXcwmhzGEWhK 4jmNRt2qWs39vbM/ZCQ7I8aKcgZJ6r35wInWpaqOH2xE0Jzx1rbC0aY+66KnPSFXZ …

Force ssh client to use ssh-key and not password to authenticate

2020-04-05 · 1 min read · ssh ssh-key keys password authenticate ·

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1ssh -i ./server-keys.ppk -o PubkeyAuthentication=yes -o PasswordAuthentication=no deps@104.129.111.150 Some details in https://unix.stackexchange.com/questions/15138/how-to-force-ssh-client-to-use-only-password-auth Tested in: OpenSSH_7.4p1, OpenSSL 1.0.2k-fips

Permission denied (publickey,gssapi-keyex,gssapi-with-mic)

2020-04-02 · 1 min read · ssh keys permission-denied config ·

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1[icasimpan@icasimpan ~]$ ssh icasimpan@204.48.29.45 2The authenticity of host '204.48.29.45 (204.48.29.45)' can't be established. 3ECDSA key fingerprint is SHA256:/g89dBppp6ir72D3dUvHFm4de2k3NPtYKOOfNkUkFQQ. 4ECDSA key fingerprint is MD5:58:41:92:ed:e1:55:52:3f:69:6a:e5:27:7a:dd:98:6a. 5Are you sure you …

Remove Bad Keys From ~/.ssh/known_hosts

2020-04-02 · 1 min read · ssh keys public-key bad config troubleshooting ·

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Sample 1icasimpan-local:~ icasimpan$ ssh root@99.206.157.36 2@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 3@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ 4@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 5IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! 6Someone could be …