O ssh do servidor Linux fica pedindo senha, qual a configuração correta, o que está faltando?

O ssh do servidor Linux fica pedindo senha, qual a configuração correta, o que está faltando?

Estou tentando me conectar ao servidor ssh2. Consigo me conectar via senha, mas precisei configurar o ssh, então criei o ssh-keygenlocalmente e copiei para o servidor usando o comando ssh-copy-id root@IP_ADDRESSe verifiquei novamente, ele foi salvo na pasta ~/.ssh/authorized_keys.

Eu mudei homee .sshmas authorized key permissionsnada parece ajudar e o servidor continua pedindo senha.

chmod go-w ~/
chmod 700 ~/.ssh
chmod 600 ~/.ssh/authorized_keys

Também verifiquei se /etc/ssh/sshd_configestá tudo bem. A seguir estão as configurações

RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile      %h/.ssh/authorized_keys

Também reiniciei o ssh-service sempre que fiz alguma alteração sudo systemctl restart ssh.service. Isso está ficando muito frustrante agora. Uma configuração simples não está funcionando e leva horas.

Permissões da pasta raiz

drwx------  12 root root    20480 Apr  7 00:52 root

Permissões da pasta .ssh

drwx------   2 root root  4096 Apr  7 00:32 .ssh

permissões de chaves_autorizadas

-rw------- 1 root root 563 Apr  7 00:07 .ssh/authorized_keys

Registrar usando ssh -vv

OpenSSH_8.9p1, OpenSSL 1.1.1m  14 Dec 2021
debug1: Reading configuration data /home/ad/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug2: resolve_canonicalize: hostname **********:2e0c::2 is address
debug1: Connecting to **********:2e0c::2 [**********:2e0c::2] port 22.
debug1: Connection established.
debug1: identity file /home/ad/.ssh/id_rsa type 0
debug1: identity file /home/ad/.ssh/id_rsa-cert type -1
debug1: identity file /home/ad/.ssh/id_ecdsa type -1
debug1: identity file /home/ad/.ssh/id_ecdsa-cert type -1
debug1: identity file /home/ad/.ssh/id_ecdsa_sk type -1
debug1: identity file /home/ad/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /home/ad/.ssh/id_ed25519 type -1
debug1: identity file /home/ad/.ssh/id_ed25519-cert type -1
debug1: identity file /home/ad/.ssh/id_ed25519_sk type -1
debug1: identity file /home/ad/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /home/ad/.ssh/id_xmss type -1
debug1: identity file /home/ad/.ssh/id_xmss-cert type -1
debug1: identity file /home/ad/.ssh/id_dsa type -1
debug1: identity file /home/ad/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.9
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.7p1 Debian-5+deb8u7
debug1: compat_banner: match: OpenSSH_6.7p1 Debian-5+deb8u7 pat OpenSSH* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to **********::2:22 as 'user'
debug1: load_hostkeys: fopen /home/ad/.ssh/known_hosts2: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,[email protected],diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,ext-info-c
debug2: host key algorithms: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],[email protected],rsa-sha2-512,rsa-sha2-256
debug2: ciphers ctos: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: MACs ctos: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,[email protected],zlib
debug2: compression stoc: none,[email protected],zlib
debug2: languages ctos: 
debug2: languages stoc: 
debug2: first_kex_follows 0 
debug2: reserved 0 
debug2: peer server KEXINIT proposal
debug2: KEX algorithms: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1
debug2: host key algorithms: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ssh-ed25519
debug2: ciphers ctos: aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],[email protected]
debug2: ciphers stoc: aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],[email protected]
debug2: MACs ctos: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,[email protected]
debug2: compression stoc: none,[email protected]
debug2: languages ctos: 
debug2: languages stoc: 
debug2: first_kex_follows 0 
debug2: reserved 0 
debug1: kex: algorithm: [email protected]
debug1: kex: host key algorithm: ssh-ed25519
debug1: kex: server->client cipher: [email protected] MAC: <implicit> compression: none
debug1: kex: client->server cipher: [email protected] MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: SSH2_MSG_KEX_ECDH_REPLY received
debug1: Server host key: ssh-ed25519 SHA256:**********/***joHf2Me+/8X6H3WnPXZLQR1fE1s6Q
debug1: load_hostkeys: fopen /home/ad/.ssh/known_hosts2: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory
debug1: Host '**********::2' is known and matches the ED25519 host key.
debug1: Found key in /home/ad/.ssh/known_hosts:10
debug2: ssh_set_newkeys: mode 1
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug2: ssh_set_newkeys: mode 0
debug1: rekey in after 134217728 blocks
debug1: Will attempt key: /home/ad/.ssh/id_rsa RSA SHA256:*********/7Dd/3o******DYua3nreWs
debug1: Will attempt key: /home/ad/.ssh/id_ecdsa 
debug1: Will attempt key: /home/ad/.ssh/id_ecdsa_sk 
debug1: Will attempt key: /home/ad/.ssh/id_ed25519 
debug1: Will attempt key: /home/ad/.ssh/id_ed25519_sk 
debug1: Will attempt key: /home/ad/.ssh/id_xmss 
debug1: Will attempt key: /home/ad/.ssh/id_dsa 
debug2: pubkey_prepare: done
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password
debug1: Next authentication method: publickey
debug1: Offering public key: /home/ad/.ssh/id_rsa RSA SHA256:*********/7Dd/3o******DYua3nreWs
debug1: send_pubkey_test: no mutual signature algorithm
debug1: Trying private key: /home/ad/.ssh/id_ecdsa
debug1: Trying private key: /home/ad/.ssh/id_ecdsa_sk
debug1: Trying private key: /home/ad/.ssh/id_ed25519
debug1: Trying private key: /home/ad/.ssh/id_ed25519_sk
debug1: Trying private key: /home/ad/.ssh/id_xmss
debug1: Trying private key: /home/ad/.ssh/id_dsa
debug2: we did not send a packet, disable method
debug1: Next authentication method: password

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