Pluggable authentication modules (PAM)

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7
votes
8answers
15k views

Desktop login fails, terminal works

I have a freshly setup 12.04 LTS pc system (120 GB SSD, 1 TB HDD, 16 GiB RAM); since a few days, I can't login to the graphical desktop anymore: there is very short flashing shell window which ...
10
votes
2answers
8k views

How do you set requirements (such as minimum length) on passwords?

Is there any way to set up minimum passcode requirements, such as a minimum length, requirement of mixed case alphanumerics and at least 1 symbol in the passcode, and enforce that at passcode changes? ...
4
votes
1answer
2k views

I cannot login into any TTYs

My system is Ubuntu 11.10 (installed from 0, without upgrades/updates). When I enter into any tty (1, 2, 3..) it ask me my login name and password but I can not move forward. When I enter an user ...
4
votes
3answers
10k views

Where are passwords stored?

How do you figure out where are user's passwords stored, for users that can login? I know the system is using LDAP for users (username, home path, etc.), but it doesn't contain any kind of passwords. ...
2
votes
2answers
2k views

Pam_mount won't automount encrypted partiton

As usual, when I install a new version of Ubuntu I install pam_mount to automount my with LUKS encrypted partition on login. However, for Ubuntu 11.10, I followed the same procedure as usual, but I ...
0
votes
2answers
632 views

NFS users getting a laggy GUI expierence

I am setting up a system (ubuntu 12.04) that uses ldap, pam, and autofs to load users and their home folders from a remote server. One of the options for login is sitting down at the machine and ...
3
votes
2answers
4k views

Type password into login screen, hit enter - nothing happens

I first install Ubuntu 13.10 a few weeks ago and its been going great. I'm still pretty new to Linux, so I haven't been doing a whole lot. The past couple days I've tried installing LAMP, then ...
0
votes
1answer
96 views

Identification and Authentication methods in Ubuntu

Since I have a very long password, I would like to additionally use an alternative login method. Which other authentication methods are possible in Ubuntu to log in?