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

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2
votes
1answer
60 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
0answers
21 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
16 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 ...
0
votes
0answers
17 views

Ubuntu 12.04 Authentication is broken

I'm running Ubuntu 12.04 LTS on VM. It was fine till last friday. There were some updates available, some were related to security stuff, I don't remember exactly. After that my system is broken. I ...
16
votes
6answers
23k views

How to run an application using sudo without a password?

... but still be required for applications that need admin privilegies? In order to allow the following: $ apache2ctl restart httpd not running, trying to start (13)Permission denied: make_sock: ...
1
vote
1answer
22 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
4
votes
1answer
41 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 ...
5
votes
3answers
14k views

Password not working for sudo (“Authentication failure”)

Before I mention anything further, DO NOT give me a response saying that terminal won't show password input. I'm AWARE of that. I'm typing my user password in (not a capslock issue), and for some ...
1
vote
0answers
20 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 ...
0
votes
0answers
26 views

WiFi authentication problem - a common issue?

I have a small form factor PC that I rescued from being thrown out by work, and I had the idea to try Linux on it (I am experienced with hardware etc. but completely new to Linux). It's an Ideq 210v ...
0
votes
1answer
2k 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 ...
0
votes
1answer
12 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 ...
0
votes
2answers
2k 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 ...
-2
votes
0answers
23 views

Hotot won't authenticate in Ubuntu 12.04

Any idea why Hotot won't authenticate? I get this message: Can not authenticate you. Please try later. Update - it seems that no Twitter apps will work for me. Turpial can't log in either. Can ...
0
votes
0answers
12 views

PAM authentication failure

I got a dedicated server from a reputable hosting company. Unfortunately, they're one of those companies that thinks enabling root access is a good idea. I've successfully disabled root access and ...
3
votes
2answers
6k views

How to use Google Authenticator with OpenVPN server on Ubuntu 12.04

I have a working OpenVPN system on Ubuntu 12.04 and I'd like to add Google Authenticator for extra security. This is my current openvpn config: dev tun proto udp port 1096 ca ubuserv04-ca.crt cert ...
0
votes
0answers
7 views

user not known while configuring glance-registry

I am trying to install glance-registry but keep getting the following error $ sudo apt-get install glance-registry ... Do you want to continue [Y/n]? Y Setting up glance-registry ...
51
votes
9answers
55k views

How can I set up password-less SSH login?

I want to be able to login to a remote via ssh without having to enter the password all the time. How do I set it up? Is a different command required to execute a password-less session?
2
votes
1answer
191 views

How do I create one user without key authentication?

I've completed the following steps: I have configured Ubuntu server with Key authentication and it is working fine. I have disabled password authentication for key authentication to work. The server ...
1
vote
4answers
3k 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 ...
1
vote
1answer
22 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 ...
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
6 views

authentication password on dell [duplicate]

I changed my user settings on my computer and I am no longer able to use my password. I am running ubuntu on an old dell i received that was being tossed out. How can I reset my password?
3
votes
4answers
3k 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 ...
0
votes
0answers
15 views

Ubuntu One authentication failing with 404

I´ve been using Ubuntu One web authentication as described here Is there a way to get an access token via Ubuntuone oauth? But https://one.ubuntu.com/oauth/request has stopped working, it returns ...
3
votes
2answers
2k views

Authentication failed with the correct password and now I cannot use sudo anymore

Recently I installed Ubuntu 12.04 (first time on Ubuntu). I have my normal "administrator", and another Guest account. I was experimenting today with the user accounts, and set my "administrator" ...
1
vote
0answers
8 views

How to configure fFreeRadius server in ubuntu server?

I have an requirement to design internal radius server at my controller application. Can you please let me know how to configure FreeRadius Server in ubuntu? Thanks , Suresh.
5
votes
5answers
18k 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 ...
30
votes
1answer
5k views

How can I use face-recognition to login?

I am using Ubuntu 12.04 64-bit. I am looking for a facial recognition program that I could use to log in to my account. I have heard of Pam Face Recognition, but there does not appear to be a package ...
12
votes
2answers
6k views

nslookup finds ip, but ping doesnt

I know this looks like all the other "can ping via ip but not dns" questions, but those didnt really help me at all. Also, having hosts files in all machines is not doable as this server will ...
2
votes
2answers
56 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 ...
0
votes
0answers
28 views

Installed Ubuntu 13.10 in Hyper-V and Speech DIspacher error now Ubuntu One Not Logging In

I wanted to set up a new web server and decided to try Ubuntu. I set up a new Hyper-V VM and installed but then on reboot I received the following error: speech-dispatcher disabled; edit ...
0
votes
1answer
1k views

Catalyst Control Center (Administrative) prompts for password, then won't open?

I have a fresh (non-wubi) Ubuntu 13.04 x64 install, with successfully installed AMD Radeon HD 7870 drivers that were obtained by Software & Updates > Additional Drivers > AMD Graphics accelerators ...
1
vote
1answer
37 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: ...
1
vote
3answers
9k views

Cannot authenticate without a password

The problem can be reproduced as follows: When I remove the password of an administrator account, "Log In without Password", I cannot use that account to authenticate. When I do something that ...
0
votes
1answer
30 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
1answer
188 views

authentication method for likewise to join a domain

I installed likewise and joined my an active directory domain. I'm finding it's a bit unclear on how the default authentication works. Do I have to do any extra configuration to enable kerberos? If I ...
4
votes
3answers
2k views

Prevent duplicate wireless authentication windows

First I need to specify that this is not a duplicate of this: How do I turn off wireless connection notifications? Neither is this a duplicate of this: How to disable notification from ...
0
votes
3answers
29 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 ...
1
vote
0answers
38 views

Bogus FF user/pass authentication prompt on nxdomains

When I want to log into my router's web interface, I enter the following into my browser's address bar and hit return: http://192.168.1.1/Status_Router.asp (Actually, I have that bookmarked.) My ...
2
votes
1answer
38 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 ...
2
votes
2answers
4k views

Authentication at CUPS web interface

When I try to perform any administrative task on CUPS web interface I get pop-up window that requires me to authenticate at CUPS. Authenticating both as root and as a my user fail, even though my user ...
2
votes
2answers
1k views

'The Authentication failed' error in Ubuntu One using 12.04

I had a computer with 12.04 that Ubuntu One was working seamlessly. But I had to reinstall it in another computer (a brand new computer I've received at work). Since then Ubuntu One is not ...
0
votes
0answers
19 views

Authentication Failed while creating folder in File System

Am very new to Linux environment and am eager to learn, so I thought of installing Ubuntu. While creating a folder in File System I am getting "authentication failed". I am using Ubuntu in ...
0
votes
1answer
70 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
78 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
0answers
51 views

libnss-extrausers change password

I have Ubuntu 12.04. Installed libnss-extrausers and configured nsswitch.conf. Now, users registered in /var/lib/extrausers/{passwd,group,shadow} are recognized by the system and can login. However, ...
2
votes
0answers
223 views

Unable to access limited access folder from Windows 7 PC

I am a complete novice at Ubuntu and Linux systems in general. I have wanted to play around with the OS for years and finally set up a spare computer and installed Ubuntu 12.04.2. My goal is to make ...
70
votes
3answers
56k views

How do I deal with “unauthenticated sources” errors in the Software Center?

Any install that I'm trying through the Software Center is telling me: Requires installation of untrusted packages: The action would require the installation of packages from not authenticated ...
0
votes
1answer
127 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 ...