Nov 5 00:31:05 www sshd[1707]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=pool-72-91-85-94.tampfl.fios.verizon.net user=r oot Nov 5 00:31:07 www sshd[1705]: error: PAM: Authentication failure for root from pool-72-91-85-94.tampfl.fios.verizon.net
Jun 09, 2020 jonasled - AbuseIPDB User Profile show more Jul 20 19:25:50 vmd36147 sshd[16860]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=198.50.136.143 Jul 20 19:25:52 vmd36147 sshd[16860]: Failed password for invalid user lobo from 198.50.136.143 port 56832 ssh2 The default pam configuration tries to authenticate a user using pam_unix first, then using pam_ldap.so module if authentication with pam_unix is failed. If pam can't authenticate a user using pam_unix.so , it logs a message of auth failure and passes control to pam_ldap.so which authenticates the user successfully. sshd[9287]: message repeated 2 times: [ error: PAM: Authentication failure for root from 172.16.2.1] sshd[9287]: Received disconnect from 172.16.2.1: 11: [preauth] sshd[9312]: error: PAM: Authentication failure for root from 172.16.2.1 sshd[9315]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=172.16.2.1
SASL authentication failure: Password verification failed
A relatively common situation is one where the remote host computer is expecting public-key authentication to be used and you have not sent your public key to the host. You can do this by following the instructions in Section Uploading Your Public Key.
show more Jul 20 19:25:50 vmd36147 sshd[16860]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=198.50.136.143 Jul 20 19:25:52 vmd36147 sshd[16860]: Failed password for invalid user lobo from 198.50.136.143 port 56832 ssh2
Failure also results in denial of authentication, although PAM will still call all the other modules listed for this service before denying authentication. sufficient If authentication by this module is successful, PAM will grant authentication, even if a previous required module failed. PAM_AUTHINFO_UNAVAIL The modules were not able to access the authentication information. This might be due to a network or hardware failure etc. PAM_MAXTRIES One or more of the authentication modules has reached its limit of tries authenticating the user. Do not try again. Re: PAM authentication failure when attempting to run job 715773 Jan 14, 2010 9:23 AM ( in response to Lai-Oracle ) Thanks for the information, Oracle support came up with this technical note also.