sshd not working

[ayoubkefi]

mai 08 07:46:18 ubuntu sshd[2424]: PAM-tacplus: set_tac_srv_addr: server 0 after copy [192.168.10.2:49]
mai 08 07:46:18 ubuntu sshd[2424]: PAM-tacplus: set_tac_srv_key: server 0 key is null; address [192.168.10.2:49
mai 08 07:46:18 ubuntu sshd[2424]: PAM-tacplus: _pam_parse: server index 1
mai 08 07:46:18 ubuntu sshd[2424]: PAM-tacplus: 1 servers defined
mai 08 07:46:18 ubuntu sshd[2424]: PAM-tacplus: server[0] { addr=192.168.10.2:49, key='********' }
mai 08 07:46:18 ubuntu sshd[2424]: PAM-tacplus: tac_service=''
mai 08 07:46:18 ubuntu sshd[2424]: PAM-tacplus: tac_protocol=''
mai 08 07:46:18 ubuntu sshd[2424]: PAM-tacplus: tac_prompt=''
mai 08 07:46:18 ubuntu sshd[2424]: PAM-tacplus: tac_login=''
mai 08 07:46:18 ubuntu sshd[2424]: pam_sm_authenticate: called (pam_tacplus v1.6.1)
mai 08 07:46:18 ubuntu sshd[2424]: pam_sm_authenticate: user [readwrite] obtained
mai 08 07:46:18 ubuntu sshd[2424]: tacacs_get_password: called
mai 08 07:46:18 ubuntu sshd[2424]: tacacs_get_password: obtained password
mai 08 07:46:18 ubuntu sshd[2424]: pam_sm_authenticate: password obtained
mai 08 07:46:18 ubuntu sshd[2424]: pam_sm_authenticate: tty [ssh] obtained
mai 08 07:46:18 ubuntu sshd[2424]: pam_sm_authenticate: rhost [127.0.0.1] obtained
mai 08 07:46:18 ubuntu sshd[2424]: pam_sm_authenticate: trying srv 0
mai 08 07:46:18 ubuntu ntpd[961]: error resolving pool 0.ubuntu.pool.ntp.org: Name or service not known (-2)
mai 08 07:46:19 ubuntu sshd[2424]: tacacs status: TAC_PLUS_AUTHEN_STATUS_FAIL
mai 08 07:46:19 ubuntu sshd[2424]: PAM-tacplus: auth failed: 2
mai 08 07:46:19 ubuntu sshd[2424]: pam_sm_authenticate: exit with pam status: 7
mai 08 07:46:19 ubuntu sshd[2424]: Failed password for invalid user readwrite from 127.0.0.1 port 36248 ssh2
mai 08 07:46:20 ubuntu sshd[2424]: Connection closed by invalid user readwrite 127.0.0.1 port 36248 [preauth]