Ciao a tutti, ho un server ssh al quale mi connetto regolarmente da molti client ma non riesco da uno in particolare e non capisco perché. Il server accetta esclusivamente autenticazione via chiave.
Se provo a collegarmi al server dal client problematico ho questo log (anonimizzato, ovviamente) nel quale non riesco a trovare errori: ~ ssh -v dominio.org OpenSSH_9.3p1, OpenSSL 3.1.1 30 May 2023 debug1: Reading configuration data /home/utente/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: Connecting to dominio.org [IP.IP.IP.IP] port 22. debug1: Connection established. debug1: identity file /home/utente/.ssh/id_rsa type 0 debug1: identity file /home/utente/.ssh/id_rsa-cert type -1 debug1: identity file /home/utente/.ssh/id_ecdsa type -1 debug1: identity file /home/utente/.ssh/id_ecdsa-cert type -1 debug1: identity file /home/utente/.ssh/id_ecdsa_sk type -1 debug1: identity file /home/utente/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /home/utente/.ssh/id_ed25519 type 3 debug1: identity file /home/utente/.ssh/id_ed25519-cert type -1 debug1: identity file /home/utente/.ssh/id_ed25519_sk type -1 debug1: identity file /home/utente/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /home/utente/.ssh/id_xmss type -1 debug1: identity file /home/utente/.ssh/id_xmss-cert type -1 debug1: identity file /home/utente/.ssh/id_dsa type -1 debug1: identity file /home/utente/.ssh/id_dsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_9.3 debug1: Remote protocol version 2.0, remote software version OpenSSH_8.4p1 Debian-5+deb11u1 debug1: compat_banner: match: OpenSSH_8.4p1 Debian-5+deb11u1 pat OpenSSH* compat 0x04000000 debug1: Authenticating to dominio.org:22 as 'utente' debug1: load_hostkeys: fopen /home/utente/.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 debug1: kex: algorithm: curve25519-sha256 debug1: kex: host key algorithm: ssh-ed25519 debug1: kex: server->client cipher: chacha20-poly1...@openssh.com MAC: <implicit> compression: none debug1: kex: client->server cipher: chacha20-poly1...@openssh.com 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:/6jSA7Pc5b3+/ashKdTnDbiF0VF8VE4rxaKTzl6e+Z8 debug1: load_hostkeys: fopen /home/utente/.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 'dominio.org' is known and matches the ED25519 host key. debug1: Found key in /home/utente/.ssh/known_hosts:343 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: get_agent_identities: bound agent to hostkey debug1: get_agent_identities: agent returned 2 keys debug1: Will attempt key: /home/utente/.ssh/id_ed25519 ED25519 SHA256:ID_DELLA_CHIAVE_ED25519 agent debug1: Will attempt key: /home/utente/.ssh/id_rsa RSA SHA256:ID_DELLA_CHIAVE_RSA agent debug1: Will attempt key: /home/utente/.ssh/id_ecdsa debug1: Will attempt key: /home/utente/.ssh/id_ecdsa_sk debug1: Will attempt key: /home/utente/.ssh/id_ed25519_sk debug1: Will attempt key: /home/utente/.ssh/id_xmss debug1: Will attempt key: /home/utente/.ssh/id_dsa debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,sk-ssh-ed25...@openssh.com,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ecdsa-sha2-nistp...@openssh.com,webauthn-sk-ecdsa-sha2-nistp...@openssh.com> debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering public key: /home/utente/.ssh/id_ed25519 ED25519 SHA256:ID_DELLA_CHIAVE_ED25519 agent debug1: Authentications that can continue: publickey debug1: Offering public key: /home/utente/.ssh/id_rsa RSA SHA256:ID_DELLA_CHIAVE_RSA agent debug1: Authentications that can continue: publickey debug1: Trying private key: /home/utente/.ssh/id_ecdsa debug1: Trying private key: /home/utente/.ssh/id_ecdsa_sk debug1: Trying private key: /home/utente/.ssh/id_ed25519_sk debug1: Trying private key: /home/utente/.ssh/id_xmss debug1: Trying private key: /home/utente/.ssh/id_dsa debug1: No more authentication methods to try. ute...@dominio.org: Permission denied (publickey). Ovviamente le chiavi rsa e ed25519 sembrerebbero al loro posto sul server. -- ciao leandro
