[root@trs ~]# cat /etc/pam.d/system-auth
#%PAM-1.0
# This file is auto-generated.
# User changes will be destroyed the next time authconfig is run.
auth required pam_env.so
auth sufficient pam_unix.so nullok try_first_pass
auth requisite pam_succeed_if.so uid >= 500 quiet
auth required pam_deny.so
auth required /lib/security/pam_tally.so onerr=fail no_magic_root
account required pam_unix.so
account sufficient pam_succeed_if.so uid < 500 quiet
account required pam_permit.so
account required /lib/security/pam_tally.so deny=5 no_magic_root reset
password requisite pam_cracklib.so try_first_pass retry=3
password sufficient pam_unix.so md5 shadow nullok try_first_pass use_authtok
password required pam_deny.so
session optional pam_keyinit.so revoke
session required pam_limits.so
session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid
session required pam_unix.so
只需要增加
auth required /lib/security/pam_tally.so onerr=fail no_magic_root
account required /lib/security/pam_tally.so deny=5 no_magic_root reset
日志显示
Mar 11 17:29:14 trs sshd[3930]: pam_unix(sshd:session): session opened for user root by (uid=0)
Mar 11 17:31:36 trs sshd[3974]: PAM unable to dlopen(/lib/security/pam_tally.so)
Mar 11 17:31:36 trs sshd[3974]: PAM [error: /lib/security/pam_tally.so: wrong ELF class: ELFCLASS32]
Mar 11 17:31:36 trs sshd[3974]: PAM adding faulty module: /lib/security/pam_tally.so
Mar 11 17:31:41 trs sshd[3974]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=172.16.1.100 user=tt
Mar 11 17:31:43 trs sshd[3974]: Failed password for tt from 172.16.1.100 port 1728 ssh2
