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

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6
votes
1answer
3k views

Auth failed error on windows 7 ultimate

after installing ubuntu one on windows 7 ultimate, when i try to log in, Ubuntu gives me back the message :The authentication failed. Oh, it's OK. Perhaps I've forgotten the pass. So i clicked I've ...
0
votes
2answers
8k views

sudo in the Terminal seems not to accept password input [duplicate]

Possible Duplicate: Nothing shows up on the screen when I type my password I upgraded to Ubuntu 12.04 LTS and was trying to update software with sudo apt-get .... In the Terminal I am asked ...
2
votes
2answers
15k views

I cannot enter my password when using sudo to install Sophos AV for Linux [duplicate]

I cannot type my password as shown below. After successfully unlocking root account in Ubuntu 12.04 LTS. saintmichael@ubuntu:~$ sudo usage: sudo [-D level] -h | -K | -k | -V usage: sudo -v [-AknS] ...
1
vote
1answer
228 views

Ubuntu One Authentication process

I went to sign up for Ubuntu One and during the sign up process, I had to wait for the authentication code before I could proceed. I thought this was an instant process and it took a while for the ...
2
votes
4answers
7k views

12.04: LightDM freezes while “Logging in…” - maybe due to deactivated login sound [closed]

good morning, lightdm freezes often after I entered my passwort. It hangs exactly saying "logging in...". It's no total system breakdown though. I found out that there is already an existing bug ...
2
votes
0answers
806 views

I can log in with my password, but it's not accepted as valid for authentication

I can log in with my password just fine, but when trying to use sudo to run commands or authenticating to install software, my password does not work and my account is an administrator account. ...
2
votes
1answer
8k views

Network authentication not working

I just installed Ubuntu 12.04 and Im trying to connect it to my NAS. It connects fine to folders where there are not authentication needed. However, if I try to open a password protected folder it ...
0
votes
1answer
1k views

Can't access our Buffalo Network attached storage device

I get a box asking for the user name and password, which I correctly supply, but it won't accept them. I just verified that the user name and password work on an old 10.04 machine.
2
votes
1answer
1k views

After Upgrade to 12.04 the Login takes forever

I recently upgraded from Xubuntu 11.10 to 12.04. Since then it takes a very long time for me to Login. The time it takes to get to the login screen is normal but after I type in my password it takes ...
1
vote
2answers
10k views

Unable to connect to Samba share folders - desperation ahead

today I set up a Ubuntu Server 10.04 LTS on our computer @work, /home was requested to be encrypted. I installed Samba and configured it according to several tutorials on the net - and I'm completely ...
0
votes
1answer
554 views

“connect to hidden wireless Network” needs always admin authorization

When I select "connect to the hidden wireless Network" from the gnome wireless Menu and select the preconfigured template, I get always an authorization box when logged in as normal user. How can I ...
5
votes
2answers
990 views

Where should a non-administrative user save a CA certificate?

I have a CA certificate that I use to connect to a WPA2 Enterprise wireless network. Where within my home folder should I store the .crt file? I don't see anything in the Filesystem Hierarchy ...
0
votes
1answer
885 views

Disable constant user authentication

I've been using windows for 10 years, and now discovered Ubuntu, which is way cooler, but the downside is that I'm at a complete lost.. So far , so good but what I find annoying is that I have to type ...
1
vote
1answer
4k views

Can I set up samba so it automatically allows all the local usernames and passwords?

I have set up samba like this (this is the complete smb.conf): [global] log file = /var/log/samba/log log level = 2 security = user [homes] browsable = false read only = no valid users = %S I'd ...
0
votes
4answers
1k views

Picasa 3.9 login fails with 2-factor authentication

I've installed Picasa 3.9 via the instructions at webupd8, however the login window keeps failing with the message, "You must be connected to the Internet to use this feature." If "Try again" is tried ...
6
votes
1answer
11k views

How to use “apt-get” via “Http-proxy” like this?

I'm trying to use apt-get command on a network that uses a proxy, like this: We use 10.114.7.7 on port 80 as Http-proxy, and after that an authentication window comes up, asking for user name and ...
0
votes
1answer
802 views

Deepin Software Centre unable to aunthenticate password

I am using Kubuntu 11.10. I tried installing Deepin Software Centre in it. Installation was successful but when I launched the application it asked for password. Every time I entered the password, it ...
2
votes
1answer
6k views

How to fix sudo: setreuid(ROOT_UID, user_uid): Operation not permitted error?

I am using LDAP authentication on my Ubuntu 11.10 server. I installed libpam-ldap, and configured things accordingly. It works great, except that I get this error every once in a while when I try to ...
1
vote
1answer
1k views

Wireless USB - D-Link DWA-125, constant authentication required. Ubuntu 10.10

I installed Ubuntu 10.10 Desktop clean install on a hard drive. I then plugged in my D-Link DWA-125, and it immediately picked up my home network. So I click connect, and after a while, it asks for ...
22
votes
2answers
30k 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 ...
1
vote
0answers
392 views

ISP Radius Server [closed]

We are at the first steps in the process of setting up as an ISP and looking through the hardware and software that will be needed. Currently our wholesale supplier is quoting for a commercial radius ...
1
vote
0answers
190 views

'Authentication Required' dialogue is asking for the wrong account [closed]

For example if I try to install software from the Software Centre, or change Update Manager settings, instead of asking for my password, it asks for that of another admin account! I have to resort to ...
0
votes
1answer
4k views

Authentication problem - and I still can't change the password [duplicate]

Possible Duplicate: How do I reset a lost Administrative(root) password? My question has been previously asked by other users, but has been dismissed by those who answered. I changed the ...
1
vote
0answers
1k views

“Your authentication attempt was unsuccessful.” error after upgrading to 11.10 [closed]

I just updated to ubuntu 11.10 and am getting "Your authentication attempt was unsuccessful." I am the only user and am the Administrator, during login on my keyring i set to logon automatically, but ...
2
votes
1answer
151 views

how do I use ssh with key access in 11.10

I've used ssh before and password access from my new asus k53by laptop with a fresh 11.10 install to dev server works fine. I wanted to set up key access for added security and ease of scripting and ...
3
votes
2answers
21k views

I cannot enter my password in the terminal - can't install packages [duplicate]

Possible Duplicate: Nothing shows up on the screen when I type my password I can open a terminal (Ctrl-Alt-T) I can copy or type in the following: sudo wget ...
1
vote
2answers
6k views

Authentication for everything

I was wondering if it is possible to just disable the password authentication. It is getting tedious to install everything when I'm being asked to enter my password what feels like every two seconds. ...
1
vote
1answer
3k views

“Wireless authentification” appears even when wep key is saved [duplicate]

In Ubuntu 11.10 dialog Box "Wireless authentification requiered" appears even when the wep key it's alraedy saved in system. That appears when I lost wireless connection and the system retry to ...
80
votes
3answers
74k 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 ...
1
vote
0answers
18k views

How do I reset password in Ubuntu 11.10 [closed]

I am new to Ubuntu and am encountering problems downloading updates as I don't know or have a password to authenticate. I dropped to root shell during boot up, then used the password command, entered ...
1
vote
1answer
2k views

Local user logging when centrify express installed

I had installed centrify express in Ubuntu 11.10 from softer center. After that i am able to logging in windows domain,but i am not able logging local user account please help me Ony other way to ...
16
votes
2answers
10k 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 ...
6
votes
3answers
3k views

gksudo with cool GNOME Shell integration

What's the command for executing this "gksudo" (or whatever it is) window from Alt+F2?
36
votes
2answers
31k views

Why am I getting authentication errors for packages from an Ubuntu repository?

I'm experimenting with VPNs, so I wanted to install pptpd. john@desktop:~$ sudo apt-get install pptpd [sudo] password for john: <snip> The following extra packages will be installed: bcrelay ...
4
votes
2answers
566 views

Authenticate as root to view a folder?

Is there a way to setup nautilus so that when my user attempts to view a folder owned / locked by root, it asks for the root password? Kind of like running a nautilus browser using sudo, from the ...
5
votes
2answers
3k views

Software center will not let me authorize

When trying to install a program from the software center it will ask for a password. I enter my password and the authentication window goes away and/or tells me there is a problem and the program ...
9
votes
4answers
21k views

Can't complete dropbox installation from behind proxy

Problem: My PC on campus sits behind a proxy (requiring authentication) and I can't setup Dropbox. I am convinced that this is a proxy issue as I can't setup Ubuntu one either (but I don't use Ubuntu ...
12
votes
7answers
13k views

ssh no longer allows public key authentication

My machine recently stopped accepting incoming public key authentication. I have an ubuntu 11.04 desktop that I ssh into from a windows machine. I use putty with pageant. I am able to connect but ...
1
vote
0answers
805 views

Ubuntu unlock screen is “checking password…” too slow [closed]

Question When I don't use my laptop (with Ubuntu 11.10 (x64) and Unity 2d) for 5-10 minutes, it automatically locks. After that, when I'm trying to unlock it, it asks for the password. After I enter ...
0
votes
1answer
650 views

Unable to login after changing 'root' name in /etc/passwd

I have ubuntu server on AWS(amazon web services) EC2 . I access it remotely through Putty service on my windows. Unfortunately i have changed the username 'root' to some other editing the file ...
2
votes
1answer
3k views

Thunderbird issue with proxy authentication

I was setting up Thunderbird at home with wired Internet connection, and everything was fine. However when I tried getting new mails using college wireless which requires proxy with authentication, ...
6
votes
1answer
2k views

UbuntuOne for Windows does not work - I got “Problem opening the ping_url” error

When I try to login to existing account I got "Problem opening the ping_url" error.
4
votes
1answer
2k views

Use generated Kerberos tickets in Chromium browser

Has anyone had luck using Kerberos tickets generated with kinit in Chromium for authenticating to websites? The company I work for supports Kerberos authentication to internal websites, and I'm able ...
9
votes
5answers
5k 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, ...
0
votes
1answer
758 views

likewise open auth to AD

I have installed likewise open via apt-get on 11.04 server 32 bit and have sucessfully joined our domain. however when trying to login via putty using a domain account I cannot complete the ...
0
votes
1answer
5k views

How do I enable account lockout using pam_tally?

I am trying to implement account lockout in ubuntu using pam_tally. I have tried adding the follwing lines in /etc/pam.d/common-auth auth required pam_tally.so deny=3 account required ...
2
votes
3answers
6k views

Can Ubuntu act as a Domain Controller for multiple OSes?

I would like to install Ubuntu server at my church to start testing a few options (to eliminate Microsoft usage). Some PCs use Windows XP, and some use Ubuntu. I would like the Ubuntu server to be a ...
4
votes
2answers
8k views

Save print server authentication credentials

At my work, I print through a print server. My /etc/cups.d/client.conf file is: ServerName the.appropriate.server.location With this configuration I have to log in with a username and a password ...
1
vote
1answer
357 views

Danger of using an untrusted apt mirror or proxy

My vague understanding of the authentication mechanisms behind debian/ubuntu packaging tells me that it should be safe to install packages downloaded from an untrusted server or proxy as long as apt ...
0
votes
1answer
470 views

Does the Linksys Secure Easy Setup (SES) button work with Ubuntu?

Does the Linksys Secure Easy Setup (SES) button work with Ubuntu? I'm housesitting for someone tonight, and when I asked what their wireless password was, they told me about the SES button they press ...