pam_userdb

authenticates against Berkeley DB

Authenticate against DB

$ auth required pam_userdb.so db=/path/to/userdb

Case insensitive

$ auth required pam_userdb.so db=/path/to/userdb icase

Create user database

$ db_load -T -t hash -f users.txt /path/to/userdb.db

pam_userdb.so [options]

pam_userdb authenticates against Berkeley DB. Custom user database.
The module uses DB files. Alternative to /etc/passwd.

db=PATH

Database file path.

icase

Case insensitive username.

crypt=TYPE

Password encryption type.

try_first_pass

Try previous password.

Requires Berkeley DB. Database format specific. Custom user management.

pam_userdb enables database-backed authentication separate from system accounts.