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shoelesshunter

Member

From: USA

Registered: 2014-05-18

Posts: 289

ssh keys not being recognized

I am trying to set up password-less  login to a new server.

I generated the ssh keys and copied  my public key with ssh-copy-id.

However, I am still prompted for a password when I access the remote.

I have read that permissive permissions on .ssh and its contents can cause this so I set permissions to 700 for .ssh and 600 for both id_rsa and id_rsa.pub.

That hasn't seemed to help at all.

Any suggestions? The remote is running ubuntu 18.04. I have only simple  user access to it.

icar

Member

From: Catalunya

Registered: 2020-07-31

Posts: 520

Re: ssh keys not being recognized

Have you tried

ssh -i <key-file>

?

shoelesshunter

Member

From: USA

Registered: 2014-05-18

Posts: 289

Re: ssh keys not being recognized

would the keyfile be the id_rsa?

Here is the output when I attempt  connecting verbosely:

 OpenSSH_8.4p1, OpenSSL 1.1.1h  22 Sep 2020
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to xxx.xx.xx.xxx
debug1: Connection established.
debug1: identity file /home/jmgant/.ssh/id_rsa type 0
debug1: identity file /home/jmgant/.ssh/id_rsa-cert type -1
debug1: identity file /home/jmgant/.ssh/id_dsa type -1
debug1: identity file /home/jmgant/.ssh/id_dsa-cert type -1
debug1: identity file /home/jmgant/.ssh/id_ecdsa type -1
debug1: identity file /home/jmgant/.ssh/id_ecdsa-cert type -1
debug1: identity file /home/jmgant/.ssh/id_ecdsa_sk type -1
debug1: identity file /home/jmgant/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /home/jmgant/.ssh/id_ed25519 type -1
debug1: identity file /home/jmgant/.ssh/id_ed25519-cert type -1
debug1: identity file /home/jmgant/.ssh/id_ed25519_sk type -1
debug1: identity file /home/jmgant/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /home/jmgant/.ssh/id_xmss type -1
debug1: identity file /home/jmgant/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.4
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.6p1 Ubuntu-4ubuntu0.3
debug1: match: OpenSSH_7.6p1 Ubuntu-4ubuntu0.3 pat OpenSSH_7.0*,OpenSSH_7.1*,OpenSSH_7.2*,OpenSSH_7.3*,OpenSSH_7.4*,OpenSSH_7.5*,OpenSSH_7.6*,OpenSSH_7.7* compat 0x04000002
debug1: Authenticating to xxx.xx.xx.xx as 'xxx'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:zfW0tG2qOgr7GRJKcDgLKCp62UjRqhRb9Kn7yys4Lbk
debug1: Host 'xxx.xx.xx.xxx' is known and matches the ECDSA host key.
debug1: Found key in /home/jmgant/.ssh/known_hosts:1
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey in after 134217728 blocks
debug1: Will attempt key: /home/jmgant/.ssh/id_rsa RSA SHA256:xvWNO5TFierzWFs914keIcjIUDIUUL1pKurE7q8htLY
debug1: Will attempt key: /home/jmgant/.ssh/id_dsa 
debug1: Will attempt key: /home/jmgant/.ssh/id_ecdsa 
debug1: Will attempt key: /home/jmgant/.ssh/id_ecdsa_sk 
debug1: Will attempt key: /home/jmgant/.ssh/id_ed25519 
debug1: Will attempt key: /home/jmgant/.ssh/id_ed25519_sk 
debug1: Will attempt key: /home/jmgant/.ssh/id_xmss 
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Offering public key: /home/jmgant/.ssh/id_rsa RSA SHA256:xvWNO5TFierzWFs914keIcjIUDIUUL1pKurE7q8htLY
debug1: Authentications that can continue: publickey,password
debug1: Trying private key: /home/jmgant/.ssh/id_dsa
debug1: Trying private key: /home/jmgant/.ssh/id_ecdsa
debug1: Trying private key: /home/jmgant/.ssh/id_ecdsa_sk
debug1: Trying private key: /home/jmgant/.ssh/id_ed25519
debug1: Trying private key: /home/jmgant/.ssh/id_ed25519_sk
debug1: Trying private key: /home/jmgant/.ssh/id_xmss
debug1: Next authentication method: password: 

sabroad

Member

Registered: 2015-05-24

Posts: 242

Re: ssh keys not being recognized

Any suggestions? The remote is running ubuntu 18.04. I have only simple  user access to it.

Back to basics: is the remote username the same as local? Is this being specified on connect?

I generated the ssh keys and copied  my public key with ssh-copy-id.

Do you recall what you used as the command for this (redacted)?

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saint_abroad