pam_tally2.so 的使用方法 | 张志明的个人博客

PAM模块是我们现在使用的系统认证模块，其中包含许多接口….我们最常用的就是/etc/pam.d/system-auth 和/etc/pam.d/password-auth ,这两个文件分别管理着我们本地的认证和远程认证(ssh)
打开两个文件我们就可以看到里边调用了一些东西：

auth        required      pam_env.so
auth        sufficient    pam_unix.so nullok try_first_pass
auth        requisite     pam_succeed_if.so uid >= 1000 quiet_success
auth        required      pam_deny.so

account     required      pam_unix.so
account     sufficient    pam_localuser.so
account     sufficient    pam_succeed_if.so uid < 1000 quiet
account     required      pam_permit.so

password    requisite     pam_pwquality.so try_first_pass local_users_only retry=3 authtok_type=
password    sufficient    pam_unix.so sha512 shadow nullok try_first_pass use_authtok
password    required      pam_deny.so

session     optional      pam_keyinit.so revoke
session     required      pam_limits.so
-session     optional      pam_systemd.so
session     [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid
session     required      pam_unix.so

auth required pam_env.so

auth sufficient pam_unix.so nullok try_first_pass

auth requisite pam_succeed_if.so uid >= 1000 quiet_success

auth required pam_deny.so

account required pam_unix.so

account sufficient pam_localuser.so

account sufficient pam_succeed_if.so uid < 1000 quiet

account required pam_permit.so

password requisite pam_pwquality.so try_first_pass local_users_only retry=3 authtok_type=

password sufficient pam_unix.so sha512 shadow nullok try_first_pass use_authtok

password required pam_deny.so

session optional pam_keyinit.so revoke

session required pam_limits.so

-session optional pam_systemd.so

session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid

session required pam_unix.so

好了，pam_tally2.so ，可以帮助我们完成一些用户登陆的控制，比如，输入密码错误3此之后，锁定120s,120s之内，即使你输入正确了密码，仍然无法登陆

auth        required      pam_env.so
auth        required      pam_tally2.so deny=3 unlock_time=300 quite
auth        sufficient    pam_unix.so nullok try_first_pass
auth        requisite     pam_succeed_if.so uid >= 1000 quiet_success
auth        required      pam_deny.so

account     required      pam_tally2.so
account     required      pam_unix.so
account     sufficient    pam_localuser.so
account     sufficient    pam_succeed_if.so uid < 1000 quiet
account     required      pam_permit.so

password    requisite     pam_pwquality.so try_first_pass local_users_only retry=3 authtok_type=
password    sufficient    pam_unix.so sha512 shadow nullok try_first_pass use_authtok
password    required      pam_deny.so

session     optional      pam_keyinit.so revoke
session     required      pam_limits.so
-session     optional      pam_systemd.so
session     [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid
session     required      pam_unix.so

auth required pam_env.so

auth required pam_tally2.so deny=3 unlock_time=300 quite