Sep 15, 2008
May 15, 2006 How To Set Password Policies In Linux - OSTechNix Mar 01, 2016 c++ - PAM Authentication for a Legacy Application - Stack
Mar 03, 2020 · Every time a user changes her password, you would like it to be stored in a password history file. Additionally, PAM should check this file so that users can't reuse their previous "N" number of passwords.
Sep 27, 2006 · PAM is a flexible mechanism for authenticating users. For example, you do not allow users to reuse recent passwords. This can be accomplished by using the remember option for the pam_unix or pam_unix2 (part of certain enterprise distro) PAM module. In this quick, blog post I am going to explain how to restrict use of previous passwords using pam_unix.so. Files like /etc/pam.d/system-auth and to a larger extent /etc/pam.d/password-auth are somewhat distribution-specific. Since no applications identify themselves as "system-auth" or "password-auth", these files are actually never called on their own. A pluggable authentication module (PAM) is a mechanism to integrate multiple low-level authentication schemes into a high-level application programming interface (API). It allows programs that rely on authentication to be written independent of the underlying authentication scheme. Also password protect your key for added security. I also think ssh does cert auth out of pam so you have no way to hook the user through pam to get the mfa check. I would still suggest turning off password based auth all together. The cert provides 112 bits of entropy (2048 RSA) and that takes years to brute force.
combines SSO, PAM and a password manager with 2FA, RBAC and other security measures, such as monitoring end user behavior for unusual login activity. This approach is out of reach for most SMBs -- but that shouldn’t discourage them, especially since a password manager and 2FA may cover the overwhelming majority of their needs.
How to configure PAM to remember password history changes Mar 03, 2020 Pluggable Authentication Module (PAM) Submethod The PAM authentication can be enabled by creating a PAM configuration for the service ssh-server-g3. For information on how to do PAM session and account management irrespective of the authentication methods used, see the configuration element description for pluggable-authentication-modules.