Questions about authenticating wireless connections, SSH keys, or passwords in Ubuntu.

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1
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1answer
253 views

Authentication failure while updating

After it downloaded the file, it reports an authentication failure and skips to the next task. After finishing all downloads it reports that I should check my internet connection. Just to make ...
0
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1answer
267 views

Global sudo session in ubuntu

Is is possible to keep the sudo session for sometimes? I mean when you open synaptic, each time you have to authenticate. In a single terminal, sudo session exits for a specific amount of time. You ...
1
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0answers
25 views

What encryption and authentication algorithms does vsfpd use by default?

I have followed this guide and was able to transfer files using SFTP, I want to know the encryption and authentication algorithms used by default in that file transfer.
0
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0answers
170 views

Evolution email client authentiaction

I installed Ubuntu 14.04 on my PC and then installed gnome-core as a desktop environment. And then installed evolution as my mail client, but after configuring it and start using it, it always ...
5
votes
2answers
20k views

Proxy authentication with terminal Ubuntu 14.04

I would like to access the internet to update files etc. from the terminal on a secured proxy network. I've already tried the following: Adding to /etc/apt/apt.conf, /etc/apt/apt.conf.d/01proxy, ...
3
votes
1answer
189 views

How can I use ldap authentication with full disk encryption?

I'm evaluating (x)ubuntu client for my companies software developer. We must use full disk encryption because of software, which doesn't save their files in /home (like databases). The company uses ...
0
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0answers
164 views

Ubuntu 12.04 - SSH hang at reading configuration

Hi fellow Ubuntu users! I currently have a problem when connecting to remote computers at work. Here is the log : OpenSSH_5.9p1 Debian-5ubuntu1.4, OpenSSL 1.0.1 14 Mar 2012 debug1: Reading ...
0
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1answer
92 views

Authentication with admin password problem [duplicate]

I have read quite a few of the answers to password problems but am completely new to Ubuntu and can't figure this out. I bought my computer (a Dell vostro) a few days ago, and I was trying to install ...
0
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1answer
332 views

PAM Module & nsswitch.conf

As i know, there are two authentication schema available on linux. PAM auth modules and, /etc/nsswitch.conf file When user logs in, which one take the precedence.?
1
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0answers
79 views

Ubuntu asks for permission to add a printer, but nothing works

I am trying to install my HP LaserJet Pro 400 color m451nw, got it all worked out using the hplip open-source program (hplip-3.14.6) until I get to the very end where I verify and setup the device and ...
0
votes
2answers
91 views

Why does Ubuntu keep asking me for another super user's password?

I have two users: misha-local (the first user I created when installing Ubuntu) misha (a user authenticated against an LDAP server) I'm logged in as misha. misha@misha-antec:~$ whoami misha ...
0
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0answers
312 views

Using Port 587 for Secure Submission

Testing from swaks, mail is delayed indefinitely. I believe that the local mail server is configured correctly, as per the ehlo responses: thufir@dur:~$ thufir@dur:~$ telnet localhost 25 Trying ...
7
votes
1answer
4k views

Error Password: chsh: PAM: Authentication failure when try to install Oh my zsh

I try to install Oh my zsh. After install zsh (sudo apt-get update && sudo apt-get install -y zsh) Then I install sudo apt-get install -y curl then install git. the problems occurs ...
0
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0answers
13 views

Need to reset Authenic Password! [duplicate]

I'm having this extremely frustrating problem right now! I bought a HP Mini Notebook 110-1025 from someone and before she sold it to me she did a system recovery and used this Ubuntu program instead ...
0
votes
0answers
81 views

After ldap and pam installation I cannot log in my computer

after ldap (Server) and pam (client) installation I cannot log with my user or my root in my computer. Maybe I configured wrong in pam. But I know password for root and ldap admin. After reboot I ...
0
votes
1answer
139 views

ssh pair key authentication problem

I have a problem with public and private key authentication. I do this steps and then, public-key based doesn't work. 1- generate a pair of private and public key (RSA) using the following command: ...
2
votes
0answers
445 views

Ubuntu Server (14.04 LTS) System-Wide Socks5 Auth Proxy

I have recently switched to the server version of Ubuntu 14.04 LTS and am not aware of a way to apply a system-wide authentication socks5 proxy so that all traffic on that computer goes through the ...
1
vote
2answers
204 views

Username/Password Authentication Failed. dpkg: error: requested operation requires superuser privilege

gichan02@gichan02-Latitude-D520:~$ wget https://private-ppa.launchpad.net/commercial-ppa-uploaders/xojo/ubuntu/pool/main‌​/x/xojo/xojo-bin_2013.41-0ubuntu1_i386.deb; dpkg -i xojo-bin*.deb --2014-05-28 ...
0
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0answers
28 views

How to disable multiple authentication?

Ubuntu's policy of reauthenticating the user every few minutes for sudo commands is a significant productivity drain, especially if you have a long password. I realize that autologin can get rid of ...
0
votes
1answer
5k views

Ubuntu 12.04 GPG error: http://archive.ubuntu.com precise Release: The following signatures were invalid: NODATA 1 NODATA 2 [duplicate]

I know this is asked often but nothing seems to work for me. Every time I try to update I get the following: sudo apt-get update Get:1 http://archive.ubuntu.com precise Release.gpg Get:2 ...
2
votes
0answers
1k views

How to install git server with apache authentication on Ubuntu 14

I trying to install git server on Ubuntu 14 following these steps: www.jmuras.com I made a little change when creating git.conf and symbolic link cause goes on different folders for Ubuntu 14, i did ...
2
votes
1answer
299 views

How to authenticate a startup disk image?

The process of creating a startup disk on Ubuntu looks really vulny to me. It's scary in a number of ways. Please either (1) refute my assertions with contrary evidence or (2) tell me how to avoid ...
1
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0answers
76 views

What happened whith software-center - authentification failed? [duplicate]

2014-05-04 16:00:34,847 - softwarecenter.backend.zeitgeist_logger - WARNING - Support for Zeitgeist disabled 2014-05-04 16:00:35,910 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None' ...
0
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0answers
98 views

while configuration of samba for ubuntu 12.04 client acess is denied

First i was login as root sudo su - apt-get install winbind samba Add the following lines to the /etc/samba/smb.conf in the [global] section. security = domain netbios name = UBUNTU_01 password ...
1
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2answers
600 views

Administrator password

I have recently installed Ubuntu 14.04 on my laptop and when I enter the admin password (it is only me using the system) I get the message that the password is wrong....I know that this is not the ...
0
votes
1answer
238 views

SSH “Permission Denied (Public Key)” Automatically re-occuring problem

I have a headless server with (until recently) working SSH and public key auth. I deactivated passwords and had a problem resembling the one in this thread, ie. upon SSH-ing into my server I get: ...
2
votes
1answer
3k views

authentication required by wifi network ubuntu 14.04

Whenever I connect to my wifi network, this annoying 'authentication required by wifi nework' window pops up, with my wifi password in it. All I have to do is to press the Connect button. Still I ...
1
vote
1answer
750 views

Authenticating error with ubuntu 14.04 LTS

< Problem: Just as I upgraded my ubuntu 13.10 to 14.04 LTS. I couldn't pass keyring and bash authentication. I can login in recovery mood for both root and my account, but that's not the case in ...
0
votes
1answer
366 views

LDAP authentication: not able to login through GUI but able to login from console

I am building a LTSP environment with LDAP authentication. I have configured the LTSP,LDAP server and client perfectly. I checked with getent passwd command in LTSP/LDAP client. I can see my LDAP ...
0
votes
1answer
28 views

Can I secure a webpage with something other than username/password

I want to secure a webpage, but I want something better than username and password. Is there any public key style authentication for a webpage? I'm not concerned with the usability / convenience of a ...
6
votes
1answer
1k views

I get Authentication is needed to run `/usr/bin/dropbox' as the super user

in a system popup window on startup. Anyway to avoid this? fwiw I authenticate ok with my pw. I think this may have started after my recent upgrade from Ubuntu 12 -> 13
1
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0answers
118 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 ...
5
votes
1answer
956 views

Stop Ubuntu asking for password to mount second drive

Whenever I turn on my machine and browse to the second hard disk in nautilus it asks me to authenticate to mount the drive. I can find guides on how to turn on this behavior, but not to de-activate ...
0
votes
1answer
80 views

ssh key login to vps woes

I recently created a vps for web hosting purposes. Everything was going fine until I decided that it's time to add another account and disable root authentication. I added a new user to the sudoers ...
1
vote
1answer
176 views

Authentication failure for FTP server

I followed this link to install ftp server. And also added ftp user(ftpuser) and also added ftp password(1234567). But when I am using this password in any wordpress site or any ftp software such as ...
1
vote
1answer
72 views

Private/Public key authentication not working after reinstalling ubuntu

I backed up my ~/.ssh folder and reinstalled ubuntu 13.10 on my machine. Then I just copied the .ssh folder back into my home folder and tried to connect to my server. I'm getting the following error: ...
2
votes
2answers
145 views

Disable console access?

How do I disable console access to Ubuntu 12.04? I want to only allow login over SSH. I have searched the web thoroughly but no clear answer was found. EDIT: I'm talking about disabling physical ...
7
votes
1answer
1k views

Error authenticating some packages while upgrade

When I try to upgrade my ubuntu 13.04 to 13.10, it gives the following error: It was not possible to authenticate some packages. This may be a transient network problem. You may want to try again ...
0
votes
1answer
121 views

filter PAM_yubico.so debug stdout

I want to use the yubico-pam module (https://github.com/Yubico/yubico-pam) to enable challenge-response authentification using my yubikey when sudoing. I've managed to do that by adding the line ...
0
votes
3answers
35 views

User Auth Failure

I was trying to change my usernme on Ubuntu 12.04 lts by opening Terminal and enter this command $ sudo nautilus Then, I went to File System > home > alex (my username) I right click on ...
2
votes
1answer
160 views

smb authentication not working

I've recently created a windows file share (SMB). On linux however, it just says "Unable to mount location Failed to mount windows share" instead of asking for a username & password. On the shares ...
0
votes
1answer
315 views

Connect to internet via captive portal from console

I use Plasma-Desktop. For some reason the packages for starting my graphical desktop are broken. I'd like to install the patched version but therefore I need to connect to the internet. Using a ...
0
votes
1answer
983 views

Unable to login through GUI as a user but I am able to login via terminal

I am unable to login through GUI as a user but I am able to login via terminal. This occurred after I installed 2 steps authenticator of Google using apt-get install command. I followed these steps: ...
0
votes
1answer
546 views

Kerberos and google-authenticator (2-factor auth)

Does anyone know how can I use google-authenticator in combination with kerberos and thus provide to my users 2-factor authentication?
0
votes
1answer
3k views

How to configure system wide proxy with user authentication

I would like to use my LAN's proxy server in Ubuntu Desktop 12.04, but all my attempts have failed. Here is what I did: 1) I went to System Settings Menu > Network, selected Network Proxy, Manual ...
0
votes
1answer
243 views

Unusual activity was logged on my system when I wasn't home

Can someone please help with this log? I wasn't home when this happened. Dec 27 07:48:13 mikky-E720 su[26915]: pam_unix(su:session): session opened for user mikky by (uid=0) Dec 27 07:48:13 ...
1
vote
3answers
19k views

Public Key authentication failed

I am using ubuntu 13.10, and the server runs ubuntu 12.04. I had generate private and public keys using ssh-keygen, and put id_rsa.pub to server side and added it to authorzied_keys accordding to the ...
-1
votes
2answers
3k views

Software Centre Authentication Error 13.10 [closed]

So I'm very new to Ubuntu, I don't know how to edit files, everything I do to improve Ubuntu is done through the Terminal using guides I find online. Basically since I downloaded Ubuntu 13.10 overtop ...
1
vote
1answer
97 views

Updates Require Authentication

My Update Manager in Ubuntu 12.04 pops up this message while installing updates: 'Requires installation of untrusted packages. The action would require the installation of packages from not ...
0
votes
1answer
643 views

Can I have apt-get take my authorization credentials?

I have a Ubuntu virtual machine that I use at work. I had previously been using this without any issues but there was an update put in that now requires all outbound connections to authenticate with ...