Pluggable authentication modules (PAM)

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4
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1answer
187 views

How to properly invoke motd for SSH connections with PAM disabled

I have configured a nice motd message that shows me lots of relevant infos when I login to my VPS via SSH. As password authentication is disabled in sshd_config I would also prefer to disable PAM as ...
3
votes
1answer
2k views

What causes “pam_unix … conversation failed” in auth.log

There are thousands of entries in my auth.log like this: sudo: pam_unix(sudo:auth): conversation failed What causes these to occur? I'd like to fix whatever it is but I'm a bit mystified as to ...
2
votes
1answer
70 views

how to manage ubuntu users from php

I have an Ubuntu 12.04 server machine in a local net, and I would like to log in my user through php. I have tried with pam_auth() but it wasn't configured neither activated for php. I tried a ...
1
vote
1answer
103 views

how to roll back broken privileges in 14.04?

I am running Ubuntu 14.04.3 32bit OS. A few months ago I wanted to install QTCAM from source which it requires systemd library files. As you know 14.04 Ubuntu doesn't use systemd yet, so, as the ...
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1answer
435 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 ...
1
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1answer
198 views

Why dpkg asks “Override local changes to /etc/pam.d/common-*?” when libpam-runtime/override is set to false?

In my system, libpam-runtime/override is set to false (which I can see using debconf-get-selections). Why when upgrading the system, specifically libpam-systemd, dpkg still pops up the window ...
1
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1answer
153 views

TRIM on encrypted device with Precise

I have migrated the main data to a new SSD. (That is Samsung 840 EVO, 120GB.) My ~ is an encrypted partition automounted by pam_mount. That is, there is a record in /etc/security/pam_mount.conf.xml ...
1
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1answer
2k views

pam_systemd delays SSH login - required?

On our Saucy servers (13.10) we are seeing long delays when logging into the systems via SSH. I figured out it is related to the line session optional pam_systemd.so in ...
1
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1answer
760 views

Login with facial recognition in Ubuntu 13.04?

I have tried to install „PAM face authentication“ with the following commands: sudo add-apt-repository ppa:antonio.chiurazzi sudo apt-get update sudo apt-get install pam-face-authentication But it ...
1
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1answer
2k views

Mount the directory / HOME directory located on a remote Windows 2008 R2

I am currently working on the integration of Ubuntu 12.04 LTS Linux on an Active Directory domain in Windows 2008 R2. I have managed to integrate my Ubuntu 12.04 machine to AD 2008, my user ...
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0answers
664 views

How can I set up radius authentication properly?

On all of our linux workstations, we have configured the PAM modules to use radius authentication. This works well for all of the various things like login on the console, login using ssh, sudo, etc. ...
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64 views

I locked myself out from using su or sudo. I'd like to understand what I did there

In an attempt to increase the numer of files my domino server is allowed to handle, I changed /etc/security/limits.conf, adding following lines. notes soft nofile 60000 notes hard nofile 60000 ...
3
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0answers
161 views

SSH with PAM Google

I have a server with Google Authenticator enabled. It worked fine, and one day I tried to login, and suddenly I'm not able to. Fortunately, I do have Ajenti installed with a terminal, so it's not a ...
3
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0answers
69 views

Biometric Enrollment

I am interested in developing a Match-on-card Logon functionality (biometric enrollment) for users on Ubuntu. I've searched through PAM modules, in Ubuntu Software Center, and with Google, and found ...
3
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0answers
129 views

In /etc/pam.d/sshd, what does “# [1]” mean?

In the PAM configuration file /etc/pam.d/sshd, there are a few lines ending in # [1]; for example: session optional pam_motd.so # [1] This doesn't seem to appear in any of the other PAM ...
3
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0answers
1k views

Synchronize SSHFS mount with local filesystem

I've got a directory called "secure" that I mount on my laptop via sshfs whenever the server is in reach. While this server is in reach I want to keep it in two-way sync with a directory called ...
2
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0answers
86 views

How does LightDM treat PAM?

I use XFCE as my desktop, and I wanna know how LightDM works with PAM. when I use normal kernel arguments, LightDM starts and then XFCE is started by LightDM. When I add "text" to kernel parameter, ...
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0answers
365 views

How do we implement requirements of password policy?

This question might look similar but I could not find a solution to this which covers all the below requirements of the policy, Hence please help me: - Incorrect pass lockout (after 3 incorrect ...
2
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0answers
844 views

Can't authenticate against LDAP. /etc/nsswitch.conf seems to be ignored

Running ubuntu 14.0.4.1 on a BananaPi (ARM). I've had a lot of luck getting LDAP authentication to work under 14.0.4 on x86, but something about this just isn't working. If you run getent passwd | ...
2
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0answers
182 views

How to enforce LDAP group membership with libpam_ldap for SSHD

I am running 14.04 servers that I have install the ldap authentication package ldap-auth-client on and configured to connect to our LDAP servers. I have the authentication part working as well as the ...
2
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0answers
176 views

lubuntu completely ignoring ldap setup. Followed guide, no contact with ldap server

We have LDAP authentication working on every other server and lxc container in our enterprise, but when we try and have a brand spankin new Lubuntu 14.04 installation do the same, it's completely ...
2
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0answers
112 views

Accidentally removed /etc/pam.d/common-* files

I accidentally removed /etc/pam.d/common-* files on Ubuntu 12.04 through ssh. I have a backup of the files however, I am unable to use sudo nor log back in. Is there a way to fix this?
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32 views

winbind and passwd issues

I successfully configured a Ubuntu 15.10 Workstation to authenticate against Active Directory. The only thing left so far is the ability to change the Active Directory password. When I enter the ...
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0answers
241 views

Why do I have to set usePAM to 'no' to manage a ssh connection?

I have a system user named user1 (the main one). I've tried to set a ssh connection between a user named foreignuser and the main one (user1). For that, I've generated a couple of keys with ...
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0answers
89 views

Gnome-keyring is not being unlock when i log in in gdm

My ubuntu 14.04.2 is always asking the password for gnome-keyring after login. I want to automatically unlock that, but all that I've found is for too older versions of Ubuntu, and seems that answers ...
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0answers
926 views

What is the correct way to modify /etc/pam.d/common-auth?

By default /etc/pam.d/common-auth looks like this $ cat /etc/pam.d/common-auth # # /etc/pam.d/common-auth - authentication settings common to all services # # This file is included from other ...
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0answers
77 views

Can login via ssh, but not system tty

Here's something weird. I can: ssh xyz@localhost provide my password, and login as xyz. However, I if hit ctrl-alt-F3 to go to the system prompt, and try to login as the same user xyz I get a ...
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92 views

Custom MOTD does not update until scripts finish

I recently got a small server and gave some friends accounts on it. They all have their own web pages in ~/public_html using lighttpd so I wrote a script to backup every user's public_html directory. ...
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0answers
180 views

Ubuntu 12.04: pam_motd sometimes displays only partial MOTD

This isn't a very big deal but it really irritates me somehow. We have a large number of machines running Ubuntu 12.04 (server/amd64) which i frequently ssh into. We have the standard set-up for this ...
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0answers
262 views

Network Manager asks to unlock keyring after auto login

After updating from Precise to Trusty I get a popup requesting to unlock the keyring for Network Manager after each login (autologin is enabled). On the net people advise to make the connection ...
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0answers
223 views

PAM authentication using ssh key instead of password

When I try to use chsh to change my default shell, I get prompted for my user password. The problem is I log in using my SSH key and do not have a user password - by design. Yes, I can set a ...
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0answers
205 views

pam radius module access-reject

I am trying to set up an Ubuntu server that my users will connect to. I already have a Radius server running on a Windows box, and I would like for connections to this Ubuntu box to authenticate to ...
0
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0answers
11 views

Fingerprint reader authenticates but does not close dialog box

I have a T550 which sports the following reader: Bus 002 Device 016: ID 138a:0017 Validity Sensors, Inc. After plenty of tweaking around I managed to get it to work. I managed to register my ...
0
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0answers
34 views

force pam to return success

I want to be able to login (without systemd-user-sessions.service running, is it possible?). I masked the systemd-user-sessions.service, rebooted, but PAM wont let me in (I can login in tty1 though): ...
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0answers
19 views

How to get rid of “You must choose a longer password” fast and without thinking?

I'm a Slackware user and now I'm here in a Ubuntu 14.04. I tried to change my password (to a simpler one) with passwd and got: You must choose a longer password I did a quick search and found the ...
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0answers
41 views

How to enable password authentication limit on lock-screen in ubuntu 12.04 ?

I need to limit the user to 3 failed login attempts. If the user doesn't enter correct password after 3 attempts, I need to lock his account for certain configurable period of time. I have read about ...
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0answers
20 views

iniparser: cannot open /etc/security/pam_winbind.conf

Each time I type a sudo command I get this: iniparser: cannot open /etc/security/pam_winbind.conf What's this error and how can I get ride of it?
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26 views

pam_mount, pam_ldap and screen unlocking

I am having trouble getting these three components to work in an ldap environment: authenticate the ldap user mount a folder (type cifs) on login using pam_mount be able to unlock the screen once it ...
0
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0answers
69 views

How to Fuse Mount into Home Folders - After EcryptFS is mounted?

Question: In Linux, how do you automate a folder to be mounted into a User's Home Folder? -- But with these constraints: Only After their Encrypted Home Folder has been mounted -- so the mount ...
0
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0answers
19 views

password changed by poppassd doesn't reflect smbpasswd

I have installed poppassd and coded a php script for users to change their passwords via web. However I noticed that what being changed via poppassd did not reflect users' samba password. Any pointers ...
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0answers
25 views

What pam packages to install so that PAM running on OSx will compile and run on Ubuntu 15.04

In the Ubuntu Linux-pam 1.1.8 package the pam_prompt function is a void while in Linux-Pam and BSD packages it is a int function. Why the difference? We have PAM running on OSX and want to now use ...
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0answers
46 views

How do I enter password via keyboard without using pamUSB?

I installed pamUSB and I have used my USB flash drive to store and enter my password automatically in ubuntu 14.04. But my USB memory is formatted. Therefore, the system shows the following message ...
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0answers
288 views

NGINX Auth support and MYSQL

I have installed NGINX server. The requirement is to allow only certain IP addresses to access this service. The list of allowed IP are stored in a MYSQL database. I was able to install and configure ...
0
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0answers
46 views

Ubuntu 12.04 pam_tally2 counter increments by 2 instead of 1

I am a high school CS coach and am preparing a lesson on Ubuntu 12.04 failed login attempts (pam_tally2) with the objective of demonstrating how to lock out a user after x failed login attempts. I ...
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201 views

Mail server PAM authentication error

Few days ago, the mail server wasn't able to send any mail (only receiving), i checked the logs and found many errors "wrong authentication and buffer error" auth_pam: pam_authenticate failed: Memory ...
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0answers
257 views

How to authenticate users via PAM using freeradius?

I have like 20 users in server2, and I need to configure PAM on server1 to authenticate users against /etc/passwd file using freeradius which is configured on server2 with a shared secret ...
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0answers
28 views

Conditional authentication

I want to use the following authentication in Linux: If during the boot flash drive is connected, the logon to the operating system is performed by the user "user1", in this case should be carried out ...
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0answers
14 views

Defining what happens after trying 3 times to add a user with a pass that doesn't match the pass-policy set in pam.d

I've set a password policy, when creating a user for example, so that just passwords with at least 1upper- 1lower-case, 1symbol, 1digit and minimum 10character length are accepted. Now the problem ...
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0answers
223 views

PAM searches /lib/security when modules in /lib/x86…/security

While configuring PAM, many times I notice an error like Apr 12 11:09:09 localhost vsftpd: PAM unable to dlopen(pam_umask.so): /lib/security/pam_umask.so: cannot open shared object file: No such file ...
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218 views

Active Directory authentication with winbind on ubuntu 14.04 LTS not working

I am using Ubuntu 14.04 LTS and all required packages are already installed and I have configured /etc/samba/smb.conf file and /etc/krb5.conf file. The server is joined successfully to AD Server. I ...