The tag has no wiki summary.

learn more… | top users | synonyms

2
votes
3answers
583 views

How can I determine if a client SSH connection has a tty associated with it?

Im writing a PAM module to handle authentication (server side - sshd) and I have to know if an ssh client is a tty (interactive) or not (non interactive). Does anyone have a clue?
4
votes
2answers
8k views

/etc/security/limits.conf for setting program limits in Linux

I have the following inside /etc/security/limits.conf (I have specified root separately because * will not include it.) user2 - core unlimited * - core 0 root ...
2
votes
1answer
343 views

How can I set path for non-interactive user authenticated using LDAP?

On a Mac running OSX 10.7.5, I need to set the PATH for non-interactive users who connect via ssh and are authenticated using LDAP. It's the same question that was asked (and answered) here: ...
1
vote
1answer
76 views

Authentication Failure Upon Successful Login

I was reveiwing the logs when I was successful in logging into a workstation - however in the in the var/log/secure log it is logged as > gnome-screensaver-dialog:pam_unix(gnome-screensaver:auth): ...
1
vote
1answer
2k views

Setting User Password Policy as per their group Linux?

I wanted to set a password restriction policy , like minlen , maxage , minage etc . I know the way to do it system wide , Can we do it for a particular group of users . I mean only users under ...
0
votes
1answer
80 views

Change order of two-factor-authentication

I am testing two-factor-authentication for ssh logins on some CentOS containers in our testing environment. I compiled my own rpms from github's source, installed and configured everything and have ...
0
votes
1answer
84 views

Deploy PAM system-auth file from Configuration Server (Spacewalk)

I have my pam.d system-auth file set up correctly on a laptop to set password complexity requirements. If the contents of the file are copied directly into the /etc/pam.d/system-auth location (or the ...
0
votes
1answer
274 views

pam_tally2 does not show address of the failing user

See this output below: # pam_tally2 -u Login Failures Latest failure From root 1 04/16/14 16:44:16 10.4.1.189 greg 2 04/16/14 16:35:57 unknown ...
0
votes
1answer
484 views

Can't login with KDM and SSSD but the login works fine from the console

I have LDAP authentication set up with SSSD and I can login fine through console and ssh. However when I try to login through KDM it just says authentication failure... More specifically: Jan 9 ...
0
votes
1answer
677 views

Mac OS X: Make home directory at login via SSH

I have LDAP server on Ubuntu 12.04 and Mac OS X 10.7.5 client configured via Directory Service. The NFSHomeDirectory property mapped to #/Users/$uid$. LDAP users can login to Mac via login screen or ...
2
votes
0answers
42 views

using pam_mount in WLAN setting

I thought this should be a simple exercise here, but obviously I couldn't find a solution, yet. I use KDE on Ubuntu 12 LTS. I want to use libpam-mount to mount a nfs share to a directory within user's ...
2
votes
0answers
1k views

How to trace LDAP authentication failures?

1) I have a working LDAP server which I've confirmed can be used with LDAP clients, running on ec2 via jumpbox. 2) I've run authconfig to setup ldap based authentication, to point to the server: ...
2
votes
0answers
481 views

Alternative (pref. mature) Linux PAM authentication methods?

I'm looking for alternative, non-keyboard-password authentication methods to unlock my laptop. Whatever authentication it is, it should be quick and convenient to perform and relatively secure. Yes, ...
1
vote
0answers
119 views

Samba sync password with Unix

I'm trying to set up Samba to sync passwords with Unix (i.e. when someone changes their password via passwd their Samba password is also changed). I've tried following the "Password Synchronization ...
1
vote
0answers
72 views

Is it possible to define a custom basepath for proftpd home directories?

I know the DefaultRoot ~ setting that you can use to jail users into their home directories but I need to customize this. When authenticating with proftpd I get the user's home-directory from ldap ...
1
vote
0answers
35 views

Does sequence matter in case of pam_env.so and pam_tally2.so together?

Very short question. auth required pam_env.so auth required pam_tally2.so deny=3 even_deny_root unlock_time=120 or auth required pam_tally2.so deny=3 ...
1
vote
0answers
224 views

xrdp with two factor authentication (libpam-google-authenticator)

I'm trying to setup a Debian VM that uses two factor authentication for logins via google-authenticator's PAM plugin. The google-authenticator part is working great through regular console logins or ...
1
vote
0answers
650 views

CIFS share via LDAP + SSL

I have NAS drive which is bound to an Open Directory LDAP server for authentication with SSL enabled. The NAS allows for CIFS shares to be accessed via LDAP authentication. (in this case the NAS is a ...
1
vote
0answers
269 views

Is there a size limit for pam modules run by vsftpd?

I'm writing a pam module to let users authenticate against a PostreSQL database linked to a Django site. It works fine when I let sshd use it, but whenever I try it with vsftpd I get the following ...
1
vote
0answers
160 views

Without pam (Pluggable Authentication Modules) how linux system will behave?

Suppose if we create nologin file under /etc then only root can login, but if we comment on all pam_nologin.so line in every file under /etc/pam.d/ then other user also login. That means these ...
1
vote
0answers
180 views

Single sign on with remote SSH server

Is it possible to authorize user based on provided login and password by connecting to remote SSH server? If connection is successfully established and login-password pair is logged on the remote ...
0
votes
0answers
9 views

Permission denied one correct login even as root after changes to /etc/pam.d/system-auth

I changed my system-auth file in etc/pam.d to the following. #%PAM-1.0 auth required pam_env.so auth required pam_lastlog.so inactive=35 auth required ...
0
votes
0answers
9 views

pam_exec.so doesn't write password to script when expose_authtok is enabled

We are using PAM for authenticating with external radius server. We have the following line in /etc/pam.d/common-auth auth [success=6 default=ignore] pam_exec.so expose_authtok ...
0
votes
0answers
17 views

sudo-ldap using LDAPv3 for Mac OSX - Possible?

I have been able to setup Mac OSX to authenticate via LDAPv3 and KRB5 to a Fedora FreeIPA server. Took some work - but got it to work. My question now is if it is possible to configure the sudo ...
0
votes
0answers
16 views

Issues with SELinux and PAM logging in

I had a recent issue where users weren't able to log in our Linux server. In the logs I found: login: FAILED LOGIN 1 FROM tty1 FOR REDACTED, Authentication failure login: pam_succeed_if(login:auth): ...
0
votes
0answers
14 views

How PAM module reads /etc/shadow

I am developing a PAM module, which is much similar to pam_unix.so, the default authentication module. I also have a small test app that uses this module for authentication purposes. My module first ...
0
votes
0answers
15 views

PAM authentication problems with su - $username

When I try to su - postgres as the root user, I immediately get su: Authentication failure This is my pam.d/su file # Begin /etc/pam.d/su # always allow root auth sufficient pam_rootok.so ...
0
votes
0answers
19 views

time.conf - datetime range details

I'm writing a time.conf GUI editor for my personal use and I need to understand how does the datetime range work, so I would be grateful if someone could explain to me: What does MoWk mean? Such ...
0
votes
0answers
724 views

Samba, winbind and AD authentication: username is invalid on this system

I am trying to set up a file server with Active Directory authentication using Samba and Winbind. Domain controller is Windows 2000 SP4 (don't judge). File server is Debian 7.7 (latest stable). This ...
0
votes
0answers
40 views

Ulimit is set on second login, not first

I'm using Debian Jessie and I have a strange error connected with setting the limit of open files per process. I want to increase the default limit for certain user (me), so I added to ...
0
votes
0answers
433 views

Can't perform Kerberos login

I can't do a Kerberos login. I've tweaked rsyslog to record *.debug to /var/log/debug, whose output is below. If I attempt to log in with ssh, I get: Jun 6 23:13:05 foo-machine sshd[13965]: ...
0
votes
0answers
36 views

ec2 enable su for user ubuntu

I am trying to enable rstudio-server login with ubuntu on ec2, but it fails. I think it uses the same auth mechanism as su. So I did sudo passwd su someotheruser su ubuntu But even though I know ...
0
votes
0answers
645 views

ssh login with mail address

I have an Ldap Server configured an running and another server listen to this users database. (Ldap client) I need to force users login on ssh with user as email (dc: mail=myself@anymail.com) ...
0
votes
0answers
54 views

Switching user in openssh using PAM

I'm trying to write a PAModule which will use compare the inserted username against a file. If the username exists in the file, it will change the username to root (since the username does not really ...