Use this tag for questions relating to authentication mechanism (i.e. proving to the system that you are you, using passwords, keycards etc.). In general don't use this and the security tag on the same question, unless it is about the security of the authentication process.

learn more… | top users | synonyms

4
votes
0answers
356 views

Wifi with WPA2-EAP MS-CHAPv2 authentication (username and password) during Debian installation

I am currently attempting to install Debian on my laptop computer. During the network configuration stage, I am prompted to "enter a passphrase for WPA/WPA2 PSK authentication". Unfortunately, I am on ...
4
votes
0answers
232 views

Why is my SSH authentication socket different from the man pages?

These two entries of man ssh-agent describe the SSH authentication socket: $TMPDIR/ssh-XXXXXXXXXX/agent.<ppid> UNIX-domain sockets used to contain the connection to the authentication ...
3
votes
0answers
18 views

Can SSH public key authentication use pam_group?

I'm configuring some servers to use LDAP (via PAM) to authenticate users. Additionally, I use pam_group to add all users to some system groups like audio/video/vboxusers/.... My PAM configuration ...
3
votes
0answers
43 views

How to pass private ssh key via string, not a file?

I have a text of a private key file. I want to connect via ssh to other node, yet the gateway I am in does not provide me with file system access. How to pass a text representation of key and not a ...
3
votes
0answers
143 views

Linux Authentication Flow (NSS -> PAM -> AD)

I am a new system administrator at an organization looking to understand the process flow of authentication in regards to how NSS, PAM and WINBIND work together. We've been having winbind related ...
3
votes
0answers
48 views

Changing LDAP server preference on Solaris 10

I've recently inherited a new environment running Solaris 10 and I was looking for information on how to change the LDAP server preference on an LDAP client, namely through modifying the ...
3
votes
0answers
40 views

exists a “two-factor authentication” for sudo, if not how to make one anyway?

tl;dr normaly to gain root priviledges via sudo requires a special user account and the use of its passphrase as means to authetication. Due to keylogging/replay (in X.org session) attacks, I would ...
3
votes
0answers
2k views

Setup LDAP client on RHEL 6.5

I am preparing for RHCSA exams and trying to setup LDAP client on my RHEL 6.5 box I am connecting to the online testing LDAP server Here I don't understand the relationship among following 3 files, ...
3
votes
0answers
4k views

WBC_ERR_DOMAIN_NOT_FOUND only for a specific account

Platform: RHEL 5.10 Version: Samba 3.6.6-0.136 Only on a single VM, one of my co-workers is able to log into the VM using his AD credentials without issue, whereas my account appears to have trouble ...
3
votes
0answers
204 views

WGET - Authenticating root AND all children folders

Before I start the question off, I want to say that a similar question helped me get past the initial login. My issue is as stated below. There's a website that I'm trying to mirror. It is something ...
3
votes
0answers
444 views

SSL Configurations for Intermediate certificate

I had implement a mutual certificate authentication and it worked successfully for following steps : create root ca (self-signed) create server certificate and sign it with ca private key create ...
2
votes
0answers
19 views

Might any damage have been caused when cancelling the update manager in Linux Mint during an update?

My Linux Mint Update Manager was running an update - a very big one. It was in the middle of downloading package files, and it was taking way too long and I had to stop it, so I clicked Cancel. When I ...
2
votes
0answers
216 views

Login to Linux using a trusted Active Directory

I'm having trouble to log in to Linux using a trusted Active Directory. The machine is connected to an Active Directory that we are responsible for in the project, but most of the users who will use ...
2
votes
0answers
1k views

Enter user authentication details for a printer?

I have a printer which is configured using the correct drivers. However, the printer requires user authentication (i.e. a username and password) to print. Where are authentication details usually ...
2
votes
0answers
332 views

SSH login from external authentication

Here is what I try to accomplish: I have a server with a git repository. I use ISPConfig as control panel for our websites and I want to integrate the ISPConfig API for email authentication as second ...
2
votes
0answers
122 views

luks single signon

I've got LUKS (Linux Unified Key Setup) running on a couple of my Linux boxes. I've looked online but haven't seen anyone document how to make it work in a single signon option, but was hoping ...
2
votes
0answers
3k views

SMTP Auth - SASL on Dovecot, Postfix and CentOS 6.2 (and Open-Xchange)

I am trying to get open SASL to work on CentOS 6.2. I followed this tutorial: http://wiki.centos.org/HowTos/postfix_sasl I suspect it works perfectly for CentOS 5.x so all I really need is an update ...
1
vote
0answers
16 views

Force authentication to use sssd not nslcd

What I did was: vim /etc/sysconfig/authconfig USESSSDAUTH=yes USESSSD=yes FORCELEGACY=no Then: authconfig --enablesssd --enablesssdauth --enablelocauthorize --update ...
1
vote
0answers
29 views

Encrypt directory on Linux

I need to create an encrypted directory (to be then filled with files and subdirectories) in a Linux ext4 filesystem, accessible to just one user. It should be: visible (just the root) from the non-...
1
vote
0answers
53 views

postgresql auth against samba active directory

I've recently set up a new Samba4 Active Directory to handle centralized authentication for my small office network. On this server is also a postgresql-9.5 instance, and I'm trying to have it ...
1
vote
0answers
32 views

Openvpn authentication fail caused by wrong system date time

I have a remote linux device connected as an openvpn client to an openvpn server over TCP, with standard certificate authentication. Unfortunately this device has lost the current system Date Time, ...
1
vote
0answers
108 views

how to download a private google spreadsheet from linux command-line?

I have a Google Sheets spreadsheet associated to a Google account, which is private and cannot be made public. I would like to know how to download a private google spreadsheet from the command-line ...
1
vote
0answers
30 views

Samba Share to Require Password Debugging

I've recently set up Samba on one of my CentOS 7 servers and it works fine, it allows anyone to access it as long as they are on the LAN. Now I need to set up a second share that can only be accessed ...
1
vote
0answers
40 views

User creation during authentication

I'm working with OpenBSD 5.6 and the goal is that I need to create user when he or she tries to authenticate with specific password. I've written a script for this purpose and everything goes ok but ...
1
vote
0answers
2k views

Adding CentOS 7 to Active Directory

I am having a hard time adding a CentOS 7 machine to my domain (Active Directory 2012 running in Windows 2008 mode). I am using realmd to join the machine to the domain. Here is what I have checked so ...
1
vote
0answers
148 views

firefox 38 hanging with corporate proxy and winbind?

I seem to have broken firefox 38 and it is unusable. It just hangs and freezes for long periods of time ranging from a few seconds up to infinity - usually in steps at the authentication prompt for ...
1
vote
0answers
251 views

When connecting my WiFi, how to open browser automatically?

I made my Linux computer providing WiFi access. This is only to browse its local website. As one does for a captive portal, I want to force the browser to display and direct to my homepage : - you ...
1
vote
0answers
242 views

Captive portal detection, popup implementation?

Based on hostapd, I m building a captive portal. - My Linux Machine provides a Wifi access. - iPad's and Android clients-tablets connect this Wifi. Generally, any client OS check if a url is ...
1
vote
0answers
189 views

Why on my Linux PPPoE connection displays sometimes authentication failure?

Here is my log: Oct 18 09:51:52 -desktop pppd[2764]: Plugin rp-pppoe.so loaded. Oct 18 09:51:52 -desktop pppd[2766]: pppd 2.4.5 started by root, uid 0 Oct 18 09:51:52 -desktop pppd[2766]: PPP session ...
1
vote
0answers
97 views

Cannot login to svn server

I have a SVN server on my Raspberry Pi (Raspbian). It has a project under the directory /welcome, I want to add users to it. My users would be admin with password admin and user2 with password ...
1
vote
0answers
3k views

Samba prompts for a password twice

I have a relatively new samba install configured to give Windows users access to some log files on a syslog server ("littleEngineer"). However it's prompting for a password to just get a share listing ...
1
vote
0answers
288 views

Fedora 20. Authentication requires a different password from su

In Fedora 20 (using Mate desktop) I have tried to change the default keyboard layout from US English to UK English, but am asked for "Authentication". The password I have for su is not accepted, and I ...
1
vote
0answers
110 views

How do I setup kerberos authetication in Fedora 19

I cannnot seem to find documentation on setting up Kerberos authentication on my Fedora 19 workstation. Which files and programs are involved? My Kerberos server is a corporate AD.
1
vote
0answers
558 views

HTTPS Authentication problem : Polipo

I use internet behind http proxy, and that requires authentication. I tried using polipo to bypass the authenticated proxy to 127.0.0.1:9134. Applying these settings to my browser, works fine for ...
1
vote
0answers
183 views

Assigning an identity to an IPsec policy in Linux

Page 36 of RFC2367 (PF_KEYv2 Key Management API) states that when the kernel needs an IPsec security association for an outbound packet, but does not have one, it will ask the key management daemon (...
1
vote
0answers
2k views

“No PostgreSQL user name specified” - possible concurrency issues?

For my dissertation I'm running the same cronjob on around 300 machines, which is: 10,25,40,55 * * * * /path/to/db_script.sh 1>/dev/null This script gets some values from the system (whether ...
0
votes
0answers
13 views

Unable to Authenticate PhPVirtualBox Remote host - Firewall off - Auth Off

I am trying to get the most very basic setup running that I can build upon for controlling a remote Virtualbox installation. The setup : Server A : 192.168.1.10 Oracle VM VirtualBox web service ...
0
votes
0answers
24 views

proxy authentication failed but for selected packages only

I have recently installed Ubuntu 14.0.1 version on my machine. I use a proxy server to access internet and for this I have to provide the necessary IP address of the proxy server, port number and my ...
0
votes
0answers
29 views

FTP user home directory for LDAP group

My company uses LDAP server for users authentication. We are now planning to add FTP server. The complicated thing is - we need several users belonging to the one group in LDAP have same home (chroot) ...
0
votes
0answers
15 views

VNC client with possibility to specify username, and encryption keys

My KVMoIP from ADDER requires connection with username and encryption. The telnet prompt mentions RFB 4.0. None of my Linux clients can do that? I tried vncviewer, xvnc4viewer, and vinaigre, each the ...
0
votes
0answers
16 views

Git + Nginx - Is it safe to have https auth for cloning and pushing to repo, while remove any auth from gitweb block?

I have following nginx configuration on Ubuntu 14.04 to use together with git httpd backend and gitweb to anonymous browse of repo and push/clone with authentication. Is it safe to use such or I ...
0
votes
0answers
53 views

Authentication required to edit Sudoers - User not listed

I made a small typo in my sudoers file, nothing a simple pkexec can't fix. The problem is that when I added my user with "adduser name" and added "name" to visudo, as well as the root and sudo groups:...
0
votes
0answers
27 views

Email user temporary code access code when using ssh

I am looking for a way to create my own two factor authentication for ssh. After the user enters the correct login info I would like the terminal to send an email to the user that contains a code ...
0
votes
0answers
30 views

Async or Parallel PAM Authentication

I did a long google search on PAM authentication. From various sources what i learned is There is a PAM Call stack, which loads config files from different sources. Based on order of modules,its ...
0
votes
0answers
17 views

Can Linux ldap users still available if ldap server is unlinked?

I have a Linux with some users have their password in /etc/shadow and other authenticate through LDAP. Is there a way to make user that have their password stored on ldap continuing to be available (...
0
votes
0answers
42 views

GUI Authentication Requiring a Different User Auth

A few weeks ago a colleague signed into my Fedora 22 workstation. He too is a group admin. Ever since then whenever I attempt to install or unlock the "Authentication Required" modal requires his ...
0
votes
0answers
36 views

Polkit Accepting Nothing

Today I switched from Windows to Fedora 21--Fermi Linux using KDE specifically--and I have a fair knowledge of how to do navigate my way around and install things via command line, but when it's ...
0
votes
0answers
113 views

Webmin: Cannot login through nginx reverse proxy

I've created a reverse proxy for webmin through nginx to run webmin at [site domain]/webmin instead of port 10000 ([site domain]:10000). When I go to [site domain]/webmin, the login page shows up as ...
0
votes
0answers
278 views

ldap user on samba share

I have two servers: one is ldap and the other is samba. I have an existing user on the ldap server for an ldap client. Now I want to use this user account with samba to give share access permissions ...
0
votes
0answers
275 views

Configure ldap client without yast

I'm configuring an LDAP client in a large number of Suse servers. The only way that I know to do this is using Yast, and this way is slow. I can't find another way. Anyone know another way to do this?...