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Hi,
I have this contents in /etc/pam.d/sshd:
[root@serviedre xan]# cat /etc/pam.d/sshd
#%PAM-1.0
#auth required pam_securetty.so #disable remote root
# default
auth required pam_tally.so deny=3 unlock_time=300 onerr=succeed file=/var/log/faillog
auth include system-remote-login
account include system-remote-login
password include system-remote-login
session include system-remote-loginOn the other hand, I use SSH keys + password authetification. *Everytime* I login via ssh, my faillog increases by one, even if I enter correct passwords. So every 9 logins, I received a block message.
This is my sshd_config:
[root@serviedre xan]# cat /etc/ssh/sshd_config
# $OpenBSD: sshd_config,v 1.94 2015/02/02 01:57:44 deraadt Exp $
# This is the sshd server system-wide configuration file. See
# sshd_config(5) for more information.
# This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin
# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented. Uncommented options override the
# default value.
#Port 22
#AddressFamily any
#ListenAddress 0.0.0.0
#ListenAddress ::
# The default requires explicit activation of protocol 1
Protocol 2
# HostKey for protocol version 1
#HostKey /etc/ssh/ssh_host_key
# HostKeys for protocol version 2
#HostKey /etc/ssh/ssh_host_rsa_key
#HostKey /etc/ssh/ssh_host_dsa_key
#HostKey /etc/ssh/ssh_host_ecdsa_key
#HostKey /etc/ssh/ssh_host_ed25519_key
# Lifetime and size of ephemeral version 1 server key
#KeyRegenerationInterval 1h
#ServerKeyBits 1024
# Ciphers and keying
#RekeyLimit default none
# Logging
# obsoletes QuietMode and FascistLogging
#SyslogFacility AUTH
#LogLevel INFO
# Authentication:
LoginGraceTime 2m
PermitRootLogin no
StrictModes yes
MaxAuthTries 6
MaxSessions 10
#RSAAuthentication yes
#PubkeyAuthentication yes
# The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2
# but this is overridden so installations will only check .ssh/authorized_keys
AuthorizedKeysFile .ssh/authorized_keys
#AuthorizedPrincipalsFile none
#AuthorizedKeysCommand none
#AuthorizedKeysCommandUser nobody
# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
#RhostsRSAAuthentication no
# similar for protocol version 2
#HostbasedAuthentication no
# Change to yes if you don't trust ~/.ssh/known_hosts for
# RhostsRSAAuthentication and HostbasedAuthentication
#IgnoreUserKnownHosts no
# Don't read the user's ~/.rhosts and ~/.shosts files
#IgnoreRhosts yes
# To disable tunneled clear text passwords, change to no here!
PasswordAuthentication no
#PermitEmptyPasswords no
# Change to no to disable s/key passwords
ChallengeResponseAuthentication yes
AuthenticationMethods publickey,keyboard-interactive:pam
# Kerberos options
#KerberosAuthentication no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes
#KerberosGetAFSToken no
# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes
# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication and
# PasswordAuthentication. Depending on your PAM configuration,
# PAM authentication via ChallengeResponseAuthentication may bypass
# the setting of "PermitRootLogin without-password".
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
UsePAM yes
#AllowAgentForwarding yes
#AllowTcpForwarding yes
#GatewayPorts no
#X11Forwarding no
#X11DisplayOffset 10
#X11UseLocalhost yes
#PermitTTY yes
PrintMotd no # pam does that
#PrintLastLog yes
#TCPKeepAlive yes
#UseLogin no
UsePrivilegeSeparation sandbox # Default for new installations.
#PermitUserEnvironment no
Compression delayed
ClientAliveInterval 300
#ClientAliveCountMax 3
#UseDNS no
#PidFile /run/sshd.pid
#MaxStartups 10:30:100
#PermitTunnel no
#ChrootDirectory none
#VersionAddendum none
# no default banner path
#Banner none
# override default of no subsystems
Subsystem sftp /usr/lib/ssh/sftp-server
# Example of overriding settings on a per-user basis
#Match User anoncvs
# X11Forwarding no
# AllowTcpForwarding no
# PermitTTY no
# ForceCommand cvs server
[root@serviedre xan]# Any hints for that?
Thanks,
Last edited by xanb (2015-07-07 06:13:14)
Owning one OpenRC (artoo way) and other three systemd machines
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Could it just be due to initially failing to authenticate via certificates? It'll try this method first and fall back to passwords if unsuccessful. Not knowing pam_tally, I don't have a suggestion for a cure though.
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Could it just be due to initially failing to authenticate via certificates? It'll try this method first and fall back to passwords if unsuccessful. Not knowing pam_tally, I don't have a suggestion for a cure though.
@drhill1: Thanks for answering. Let me know what you would have done it.
@Other people: any hint?
Owning one OpenRC (artoo way) and other three systemd machines
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I think that is a bad configuration of SSH. With *only* keys all is ok. I put a discussion here
Owning one OpenRC (artoo way) and other three systemd machines
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Sorry, I hadn't spotted that you wanted keys *and* password, I thought you meant either/or. Increasing your logging level to either verbose or debug may provide further clues as to why it thinks it's failing.
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