Pluggable authentication modules (PAM)

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12
votes
2answers
13k 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? ...
8
votes
9answers
19k 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 ...
2
votes
2answers
3k 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 ...
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
12k 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. ...
0
votes
2answers
760 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
7k 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 ...
3
votes
1answer
461 views

Use one password for administration and another for system login

How can I give a user one password for normal usage when logging in, and another password for system administration and sudo access? I want one user to have two passwords.
1
vote
1answer
235 views

PAM LDAP pam_ldap.so: failed to map segment from shared object: Cannot allocate memory

Im trying to get VSFTPD to work with LDAP using PAM. (since it does not sleep with SASL) If I login into FTP with a Shell credentails it works fine, but when I try to use an LDAP creds to login via ...
0
votes
1answer
183 views

Slow login when CIFS mounts are unavailable

I installed a PC with Ubuntu 14.04, Sssd and accounts in our OpenLDAP directory. Network shares residing on our Samba server are mounted automatically when a user logs in, through pam_mount ...
0
votes
1answer
107 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?