How can I allow any Unix user to login to Webmin?

In the Perl Modules module of Webmin, install

Authen::PAM from CPAN

In the PAM Authentication module, add a new PAM service called webmin that uses Unix authentication.

In the Webmin Users module, create a new user called something like unixer, with access to the modules that you want all your Unix users to have access to.

In each of the modules unixer has access to, change the module access control to give your users rights only to their own accounts. For example, in the Change Passwords module you should select Only this user for the Users whose passwords can be changed so that Unix users logging in can only change their own passwords.

Click on Configure Unix user authentication below the list of Webmin users and choose Allow any Unix user to login with permissions of user unixer.

Any Unix user should now be able to login to Webmin on your system.

Again, if your system does not use PAM the first two steps can be skipped, and Webmin will read /etc/passwd or /etc/shadow file directly to authenticate users.

Another alternative to doing all this is to install Usermin, which allows all Unix users to login and access only settings belonging to them, using a similar interface to Webmin.

In the Perl Modules module of Webmin, install

Authen::PAM from CPAN

In the PAM Authentication module, add a new PAM service called webmin that uses Unix authentication.

In the Webmin Users module, create a new user called something like unixer, with access to the modules that you want all your Unix users to have access to.

In each of the modules unixer has access to, change the module access control to give your users rights only to their own accounts. For example, in the Change Passwords module you should select Only this user for the Users whose passwords can be changed so that Unix users logging in can only change their own passwords.

Click on Configure Unix user authentication below the list of Webmin users and choose Allow any Unix user to login with permissions of user unixer.

Any Unix user should now be able to login to Webmin on your system.

Again, if your system does not use PAM the first two steps can be skipped, and Webmin will read /etc/passwd or /etc/shadow file directly to authenticate users.

Another alternative to doing all this is to install Usermin, which allows all Unix users to login and access only settings belonging to them, using a similar interface to Webmin.