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

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0
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1answer
367 views

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

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
1answer
34 views
+50

Whenever I delete Jabber and Yahoo from my online accounts list, they reappear

Whenever I delete Jabber and Yahoo from my online accounts list, they reappear after a restart. Because of this, whenever I open login, I get a large number of popups asking for my Yahoo password: ...
0
votes
1answer
23 views

Administrative password doesn't work when I try to install applications

I have a problem. When I try to install something from the software center it tells me my password is incorrect. In my account, I just changed my password to 'None', since I don't want to be prompted ...
0
votes
1answer
3k views

NIS client authentication

How to configure the nis client on Ubuntu? And how to configure system authentication? There is no option for system authentication like system setting system info in my system etc. When ever I go to ...
1
vote
0answers
10 views

sshd_config file is being overwritten on reboot

I need an AWS server to accept password authentication and whenever I remove the hash and set PasswordAuthentication yes After reboot or create image and launch a new instance, the # is added back ...
2
votes
1answer
21 views

How can I identify the program that has written information to a log file?

I recently got a message that something had failed to sudo on my Ubuntu laptop. At the time, I don't believe I was running anything that would need sudo. The messages that appeared in ...
23
votes
1answer
1k views

how to know if a authenticate box is real or fake?

For example, someone creates a fake Authenticate dialog to get my root password. How to know if it is real or fake?
0
votes
2answers
3k views

su: Authentication failure

I have downloaded the Eset Nod32 Antivirus from its website, and I got a eset_nod32av_64bit_en.linux file. I have right-clicked on it, Properties - Permissions, and checked the Allow executing file as ...
8
votes
4answers
4k views

Use different username on CUPS remote printing

I'm using CUPS to print on an enterprise network. The job gets submitted fine, but I need to submit it as another username. Now I'm jon but I need to send it as say jonallard. On the command line, ...
3
votes
1answer
68 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 ...
1
vote
1answer
52 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
votes
1answer
58 views

Cascading Authentication PAM login

I'm trying to set up an authentication scheme for Ubuntu using the pam files. However, I cannot figure out how to have two separate methods of authentication. I've set up a Yubikey authentication, ...
13
votes
2answers
17k views

How can I allow SSH password authentication from only certain IP addresses?

I'd like to allow SSH password authentication from only a certain subnet. I see the option to disallow it globally in /etc/ssh/sshd_config: # Change to no to disable tunnelled clear text passwords ...
0
votes
1answer
31 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
vote
0answers
16 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.
3
votes
2answers
3k views

Retrieve Windows 8 Product Key from mainboard

My new laptop came preinstalled with Windows 8. Naively, as I am, I just formatted the harddrive and installed fine old Ubuntu. Now I want to install Windows 8 for dual boot again, but I have no DVD ...
2
votes
4answers
4k views

Wireless Network Found, can't connect, repeated requests for authentication

After trawling through the internet, on forums, support websites, and through dozens upon dozens of answered questions on this site, I've not found a solution to what seems like a fairly regular ...
0
votes
0answers
26 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 ...
1
vote
1answer
1k views

Apt behind proxy

I've been trying to get a package manager to work behind our company proxy for a whole day now but without any luck. The proxy requires authentication which is my personal email address and password. ...
4
votes
1answer
365 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
vote
1answer
122 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, ...
0
votes
2answers
3k views

Downloading error “Could not retrieve the required disk image ”

When I try to download Ubuntu 12.04 using the Windows installer (Wubi) through a proxy server which requires proxy authentication, after I choose the Ubuntu installation size, username and password, ...
0
votes
0answers
28 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
votes
1answer
39 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
votes
1answer
31 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
vote
0answers
23 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
53 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 ...
1
vote
1answer
241 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
votes
0answers
43 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 ...
0
votes
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
29 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 ...
1
vote
1answer
537 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 ...
0
votes
1answer
27 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: ...
1
vote
2answers
66 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 ...
1
vote
0answers
135 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 ...
0
votes
0answers
22 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 ...
1
vote
0answers
106 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
134 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 ...
3
votes
5answers
4k views

Gnome/X logs off immediately after login — which logfiles are relevant?

I've been tinkering with fingerprint-gui as well as X/xrandr resolution settings. When I start my machine, it boots up normally. As soon as X and gnome have finished starting, it logs me off ...
5
votes
2answers
2k views

OpenSSH Two Factor Authentication

I'm using Ubuntu Server 13.04 and want to use OpenSSH for sftp. I have everything set up and the only thing not working is the Two Factor Authentication. Currently it asks for a password or the public ...
10
votes
3answers
9k views

“Software can't be installed or removed because the authentication service is not available. ”

I have 12.10 ubuntu and when I try to remove / install programs I get notification : Software can't be installed or removed because the authentication service is not available. ...
7
votes
6answers
27k views

Trying to do ssh authentication with key files: server refused our key

I'm trying to setup ssh authentication with key files in stead of username/password. The client is a Windows box running PuTTY and the server is a Ubuntu 12.04 LTS server. I downloaded puttygen.exe ...
1
vote
0answers
76 views

What happened whith software-center - authentification failed?

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' ...
1
vote
2answers
131 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
57 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: ...
0
votes
0answers
28 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 ...
0
votes
0answers
238 views

Why won't Ubuntu let me log in?

I installed Ubuntu 14.04 but after installation I cannot log in with my password. I tried the tried-and-tested route of resetting a password (rebooting into root console, remounting / with rw, ...
0
votes
0answers
29 views

how to join ldap client 12.04 to server 8.04

apt-get install libpam-ldap libnss-ldap nss-updatedb libnss-db nfscommon nscd ldap-utils You will again be asked a bunch of questions LDAP server Uniform Resource Identifier: ldap://ldap.example.com ...
0
votes
0answers
68 views

Clean installed ubuntu 14.04. Ran into some authentication problems

This was a clean install. I wiped everything even my windows partition. HP 2000 notebook, E2 vision HD AMD/ATI processor using the proprietary driver and fully up to date. 1) Using software updater, ...
0
votes
0answers
118 views

Login names in ubuntu 14.04

I am using pbis open (used to be likewise) to authenticate against an active directory. This worked fine in 12.04 with my username (ian.collins). I installed a fresh 14.04 and the latest pbis open. I ...