If of any help, this is the complete journal log associated with a rejected logon event:
Nov 13 12:28:07 sirius sshd[789]: debug3: fd 4 is not O_NONBLOCK Nov 13 12:28:07 sirius sshd[789]: debug1: Forked child 2159. Nov 13 12:28:07 sirius sshd[789]: debug3: send_rexec_state: entering fd = 7 config len 1050 Nov 13 12:28:07 sirius sshd[789]: debug3: ssh_msg_send: type 0 Nov 13 12:28:07 sirius sshd[789]: debug3: send_rexec_state: done Nov 13 12:28:07 sirius sshd[2159]: debug3: oom_adjust_restore Nov 13 12:28:07 sirius sshd[2159]: debug1: Set /proc/self/oom_score_adj to 0 Nov 13 12:28:07 sirius sshd[2159]: debug1: rexec start in 4 out 4 newsock 4 pipe 6 sock 7 Nov 13 12:28:07 sirius sshd[2159]: debug1: inetd sockets after dupping: 3, 3 Nov 13 12:28:07 sirius sshd[2159]: Connection from 192.168.8.3 port 48708 on 192.168.8.3 port 50400 Nov 13 12:28:07 sirius sshd[2159]: debug1: Client protocol version 2.0; client software version OpenSSH_7.4p1 Debian-10+deb9u4 Nov 13 12:28:07 sirius sshd[2159]: debug1: match: OpenSSH_7.4p1 Debian-10+deb9u4 pat OpenSSH* compat 0x04000000 Nov 13 12:28:07 sirius sshd[2159]: debug1: Local version string SSH-2.0-OpenSSH_7.4p1 Debian-10+deb9u4 Nov 13 12:28:07 sirius sshd[2159]: debug1: Enabling compatibility mode for protocol 2.0 Nov 13 12:28:07 sirius sshd[2159]: debug2: fd 3 setting O_NONBLOCK Nov 13 12:28:07 sirius sshd[2159]: debug3: ssh_sandbox_init: preparing seccomp filter sandbox Nov 13 12:28:07 sirius sshd[2159]: debug2: Network child is on pid 2160 Nov 13 12:28:07 sirius sshd[2159]: debug3: preauth child monitor started Nov 13 12:28:07 sirius sshd[2159]: debug3: privsep user:group 117:65534 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: permanently_set_uid: 117/65534 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: ssh_sandbox_child: setting PR_SET_NO_NEW_PRIVS [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: ssh_sandbox_child: attaching seccomp filter program [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: list_hostkey_types: ssh-ed25519,ssh-rsa,rsa-sha2-512,rsa-sha2-256 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: send packet: type 20 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: SSH2_MSG_KEXINIT sent [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: receive packet: type 20 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: SSH2_MSG_KEXINIT received [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: local server KEXINIT proposal [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: KEX algorithms: curve25519-sha...@libssh.org,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: host key algorithms: ssh-ed25519,ssh-rsa,rsa-sha2-512,rsa-sha2-256 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: ciphers ctos: chacha20-poly1...@openssh.com,aes256-...@openssh.com,aes128-...@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: ciphers stoc: chacha20-poly1...@openssh.com,aes256-...@openssh.com,aes128-...@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: MACs ctos: hmac-sha2-512-...@openssh.com,hmac-sha2-256-...@openssh.com, umac-128-...@openssh.com,hmac-sha2-512,hmac-sha2-256,umac-...@openssh.com [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: MACs stoc: hmac-sha2-512-...@openssh.com,hmac-sha2-256-...@openssh.com, umac-128-...@openssh.com,hmac-sha2-512,hmac-sha2-256,umac-...@openssh.com [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: compression ctos: none [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: compression stoc: none [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: languages ctos: [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: languages stoc: [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: first_kex_follows 0 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: reserved 0 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: peer client KEXINIT proposal [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: KEX algorithms: curve25519-sha...@libssh.org,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256,ext-info-c [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: host key algorithms: ssh-ed25519-cert-...@openssh.com,ssh-rsa-cert-...@openssh.com ,ssh-ed25519,ssh-rsa,ecdsa-sha2-nistp521-cert-...@openssh.com, ecdsa-sha2-nistp384-cert-...@openssh.com, ecdsa-sha2-nistp256-cert-...@openssh.com,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: ciphers ctos: chacha20-poly1...@openssh.com,aes256-...@openssh.com,aes128-...@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: ciphers stoc: chacha20-poly1...@openssh.com,aes256-...@openssh.com,aes128-...@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: MACs ctos: hmac-sha2-512-...@openssh.com,hmac-sha2-256-...@openssh.com, umac-128-...@openssh.com,hmac-sha2-512,hmac-sha2-256,umac-...@openssh.com [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: MACs stoc: hmac-sha2-512-...@openssh.com,hmac-sha2-256-...@openssh.com, umac-128-...@openssh.com,hmac-sha2-512,hmac-sha2-256,umac-...@openssh.com [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: compression ctos: none, z...@openssh.com,zlib [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: compression stoc: none, z...@openssh.com,zlib [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: languages ctos: [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: languages stoc: [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: first_kex_follows 0 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: reserved 0 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: kex: algorithm: curve25519-sha...@libssh.org [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: kex: host key algorithm: ssh-ed25519 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: kex: client->server cipher: chacha20-poly1...@openssh.com MAC: <implicit> compression: none [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: kex: server->client cipher: chacha20-poly1...@openssh.com MAC: <implicit> compression: none [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: expecting SSH2_MSG_KEX_ECDH_INIT [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: receive packet: type 30 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_key_sign entering [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_send entering: type 6 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_key_sign: waiting for MONITOR_ANS_SIGN [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive_expect entering: type 7 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive entering [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive entering Nov 13 12:28:07 sirius sshd[2159]: debug3: monitor_read: checking request 6 Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_answer_sign Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_answer_sign: hostkey proof signature 0x55f0b9859a80(83) Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_send entering: type 7 Nov 13 12:28:07 sirius sshd[2159]: debug2: monitor_read: 6 used once, disabling now Nov 13 12:28:07 sirius sshd[2159]: debug3: send packet: type 31 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: send packet: type 21 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: set_newkeys: mode 1 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: rekey after 134217728 blocks [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: SSH2_MSG_NEWKEYS sent [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: expecting SSH2_MSG_NEWKEYS [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: send packet: type 7 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: receive packet: type 21 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: SSH2_MSG_NEWKEYS received [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: set_newkeys: mode 0 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: rekey after 134217728 blocks [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: KEX done [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: receive packet: type 5 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: send packet: type 6 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: receive packet: type 50 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: userauth-request for user backuppc service ssh-connection method none [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: attempt 0 failures 0 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_getpwnamallow entering [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_send entering: type 8 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_getpwnamallow: waiting for MONITOR_ANS_PWNAM [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive_expect entering: type 9 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive entering [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive entering Nov 13 12:28:07 sirius sshd[2159]: debug3: monitor_read: checking request 8 Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_answer_pwnamallow Nov 13 12:28:07 sirius sshd[2159]: debug2: parse_server_config: config reprocess config len 1050 Nov 13 12:28:07 sirius sshd[2159]: debug3: auth2_setup_methods_lists: checking methods Nov 13 12:28:07 sirius sshd[2159]: debug1: authentication methods list 0: publickey Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_answer_pwnamallow: sending MONITOR_ANS_PWNAM: 1 Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_send entering: type 9 Nov 13 12:28:07 sirius sshd[2159]: debug2: monitor_read: 8 used once, disabling now Nov 13 12:28:07 sirius sshd[2159]: debug2: input_userauth_request: setting up authctxt for backuppc [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_start_pam entering [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_send entering: type 100 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_inform_authserv entering [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_send entering: type 4 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_auth2_read_banner entering [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_send entering: type 10 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive_expect entering: type 11 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive entering [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive entering Nov 13 12:28:07 sirius sshd[2159]: debug3: monitor_read: checking request 100 Nov 13 12:28:07 sirius sshd[2159]: debug1: PAM: initializing for "backuppc" Nov 13 12:28:07 sirius sshd[2159]: debug1: PAM: setting PAM_RHOST to "192.168.8.3" Nov 13 12:28:07 sirius sshd[2159]: debug1: PAM: setting PAM_TTY to "ssh" Nov 13 12:28:07 sirius sshd[2159]: debug2: monitor_read: 100 used once, disabling now Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive entering Nov 13 12:28:07 sirius sshd[2159]: debug3: monitor_read: checking request 4 Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_answer_authserv: service=ssh-connection, style=, role= Nov 13 12:28:07 sirius sshd[2159]: debug2: monitor_read: 4 used once, disabling now Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive entering Nov 13 12:28:07 sirius sshd[2159]: debug3: monitor_read: checking request 10 Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_send entering: type 11 Nov 13 12:28:07 sirius sshd[2159]: debug2: monitor_read: 10 used once, disabling now Nov 13 12:28:07 sirius sshd[2159]: debug3: auth2_setup_methods_lists: checking methods [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: authentication methods list 0: publickey [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: Unrecognized authentication method name: none [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: userauth_finish: failure partial=0 next methods="publickey" [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: send packet: type 51 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: receive packet: type 50 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: userauth-request for user backuppc service ssh-connection method publickey [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: attempt 1 failures 0 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: input_userauth_request: try method publickey [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: userauth_pubkey: test whether pkalg/pkblob are acceptable for ED25519 SHA256:zNt1fYSj/OdaqgbgzDWwUMGV2l9GmjaM6FTmlRuIbzg [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_key_allowed entering [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_send entering: type 22 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_key_allowed: waiting for MONITOR_ANS_KEYALLOWED [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive_expect entering: type 23 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive entering [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive entering Nov 13 12:28:07 sirius sshd[2159]: debug3: monitor_read: checking request 22 Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_answer_keyallowed entering Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_answer_keyallowed: key_from_blob: 0x55f0b9867a10 Nov 13 12:28:07 sirius sshd[2159]: debug1: temporarily_use_uid: 200/200 (e=0/0) Nov 13 12:28:07 sirius sshd[2159]: debug1: trying public key file /usr/local/BackupPC/.ssh/authorized_keys Nov 13 12:28:07 sirius sshd[2159]: debug1: fd 4 clearing O_NONBLOCK Nov 13 12:28:07 sirius sshd[2159]: debug1: matching key found: file /usr/local/BackupPC/.ssh/authorized_keys, line 1 ED25519 SHA256:zNt1fYSj/OdaqgbgzDWwUMGV2l9GmjaM6FTmlRuIbzg Nov 13 12:28:07 sirius sshd[2159]: debug1: restore_uid: 0/0 Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_answer_keyallowed: key 0x55f0b9867a10 is allowed Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_send entering: type 23 Nov 13 12:28:07 sirius sshd[2159]: debug3: send packet: type 60 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: userauth_pubkey: authenticated 0 pkalg ssh-ed25519 [preauth] Nov 13 12:28:07 sirius sshd[2159]: Postponed publickey for backuppc from 192.168.8.3 port 48708 ssh2 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: receive packet: type 50 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: userauth-request for user backuppc service ssh-connection method publickey [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: attempt 2 failures 0 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: input_userauth_request: try method publickey [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: userauth_pubkey: test whether pkalg/pkblob are acceptable for RSA SHA256:/TFnCvwpyL6W0Z4I71jw9u3eY4rWqB9lnHVSx3mdYNM [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_key_allowed entering [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_send entering: type 22 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_key_allowed: waiting for MONITOR_ANS_KEYALLOWED [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive_expect entering: type 23 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive entering [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive entering Nov 13 12:28:07 sirius sshd[2159]: debug3: monitor_read: checking request 22 Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_answer_keyallowed entering Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_answer_keyallowed: key_from_blob: 0x55f0b985d0d0 Nov 13 12:28:07 sirius sshd[2159]: debug1: temporarily_use_uid: 200/200 (e=0/0) Nov 13 12:28:07 sirius sshd[2159]: debug1: trying public key file /usr/local/BackupPC/.ssh/authorized_keys Nov 13 12:28:07 sirius sshd[2159]: debug1: fd 4 clearing O_NONBLOCK Nov 13 12:28:07 sirius sshd[2159]: debug2: user_key_allowed: check options: 'ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBIG1jFCDbjX1AuKEpi3U0rPtxW79kZwcEAzN+shbnni Generated on 181113.1203 for backuppc@sirius\n' Nov 13 12:28:07 sirius sshd[2159]: debug2: user_key_allowed: advance: 'AAAAC3NzaC1lZDI1NTE5AAAAIBIG1jFCDbjX1AuKEpi3U0rPtxW79kZwcEAzN+shbnni Generated on 181113.1203 for backuppc@sirius\n' Nov 13 12:28:07 sirius sshd[2159]: debug1: matching key found: file /usr/local/BackupPC/.ssh/authorized_keys, line 2 RSA SHA256:/TFnCvwpyL6W0Z4I71jw9u3eY4rWqB9lnHVSx3mdYNM Nov 13 12:28:07 sirius sshd[2159]: debug1: restore_uid: 0/0 Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_answer_keyallowed: key 0x55f0b985d0d0 is allowed Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_send entering: type 23 Nov 13 12:28:07 sirius sshd[2159]: debug3: send packet: type 60 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug2: userauth_pubkey: authenticated 0 pkalg ssh-rsa [preauth] Nov 13 12:28:07 sirius sshd[2159]: Postponed publickey for backuppc from 192.168.8.3 port 48708 ssh2 [preauth] Nov 13 12:28:07 sirius sshd[2159]: Connection closed by 192.168.8.3 port 48708 [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: do_cleanup [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug3: PAM: sshpam_thread_cleanup entering [preauth] Nov 13 12:28:07 sirius sshd[2159]: debug1: monitor_read_log: child log fd closed Nov 13 12:28:07 sirius sshd[2159]: debug3: mm_request_receive entering Nov 13 12:28:07 sirius sshd[2159]: debug1: do_cleanup Nov 13 12:28:07 sirius sshd[2159]: debug1: PAM: cleanup Nov 13 12:28:07 sirius sshd[2159]: debug3: PAM: sshpam_thread_cleanup entering Nov 13 12:28:07 sirius sshd[2159]: debug1: Killing privsep child 2160 Nov 13 12:28:07 sirius sshd[2159]: debug1: audit_event: unhandled event 12 root@sirius:~# On Tue, 13 Nov 2018 at 11:22, David Christensen <dpchr...@holgerdanske.com> wrote: > On 11/12/18 5:49 AM, Alan Taylor wrote: > > Greetings, > > Hi. :-) > > > > I have an ssh problem - one user can use it successfully, another > cannot. I have checked and rechecked permissions until I am blue in the > face … > > At the moment just trying to ssh into the same machine I am on for the > problem user (the other user can ssh successfully, both to the console > machine and outwards to others). > > Agent problem ? The successful user was setup in the installation, the > problem user was added at the command line after initial setup. > > Trouble-shooting can be tedious... > > > > Log output follows, appears to fail after the preauth stage … > > > > Any suggestions gratefully accepted > > > > root@sirius/etc/ssh # journalctl | grep sshd | grep "Nov 12 13:45" > <snip> > > > I would enter the following commands into the indicated accounts and > computers, substituting place holders with actual values (USERNAME, > SSH_CLIENT, SSH_SERVER). If you still don't see it, cut and paste your > console sessions into a reply: > > 1. As the user having problems on the computer having problems: > > $ whoami > > $ hostname > > $ cat /etc/debian_version > > $ uname -a > > $ dpkg-query -W openssh-client > > $ ls -aFl /home/USERNAME/.ssh > > $ ssh -v SSH_SERVER > > 2. As root on the SSH server: > > # hostname > > # cat /etc/debian_version > > # uname -a > > # dpkg-query -W openssh-server > > # ls -aFl /home/USERNAME/.ssh > > # grep USERNAME@SSH_CLIENT /home/USERNAME/.ssh/authorized_keys > > # tail /var/log/auth.log > > > David > >
