Questions about authenticating wireless connections, SSH keys, or passwords in Ubuntu.
19
votes
10answers
49k views
'apt-get' does not work with Proxy
For the command
sudo apt-get update
I get following error:
W: Failed to fetch http://ch.archive.ubuntu.com/ubuntu/dists/maverick-updates/multiverse/binary-i386/Packages.gz
407 Proxy ...
31
votes
6answers
22k 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?
46
votes
3answers
38k 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 ...
10
votes
6answers
8k 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: ...
4
votes
2answers
2k views
Installed perfectly but password not working for login or authentication
I installed Ubuntu on an old XP machine (replaced XP with Ubuntu) and it seemed like it went well... Until I tried to download and install the suggested updates!
The password I set during ...
8
votes
3answers
3k views
I deleted the “/etc/passwd” file and cannot log in
I was trying to change my username and also my home directory (/home/username) and my system started to crash. I deleted the passwd file but I had a backup named passwd_bkp. I tried to rename this ...
1
vote
4answers
5k 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 ...
8
votes
2answers
7k 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
...
7
votes
1answer
4k 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
2answers
1k 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.
...
8
votes
2answers
588 views
What is the least insecure way to store a password that is used by a script?
I have a Bash script that automatically authenticates with a service using my username and password. The credentials are currently stored as plain text within the script.
What precautions should I ...
3
votes
6answers
8k 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 ...
3
votes
2answers
3k 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 ...
10
votes
3answers
2k views
Security warning from Facebook in Chromium
I am terrified.
Every ten minutes Chromium pops up with a tab stating:
Success
SECURITY WARNING: Please treat the URL above as you would your password and do not share it with anyone.
Very ...
3
votes
2answers
2k views
How do I install FreeNX server so that it works correctly?
I've tried every single possible way of installing the server now, I've read every how to available and I still can't get it to work. Please let me know in which step I do wrong. I'm using ubuntu ...
5
votes
2answers
305 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 ...
1
vote
1answer
7k 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
0answers
14 views
How do I authenticate over a domain while doing apt-get update? [duplicate]
I am getting various 401 auth errors when trying to sudo apt-get update.
I am connected to my corp vpn and have an SSH into my Ubuntu machine.
How can I authenticate using my network login/pw to ...
0
votes
2answers
2k 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, ...
23
votes
3answers
3k 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 ...
5
votes
2answers
162 views
Authentication required to modify a printer- what's the password?
I have 12.04 and have 2 printers installed, both wirelessly over my personal network, no printer sharing. When I try to modify the printers I get a window asking for authentication (username and ...
5
votes
3answers
10k 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 ...
1
vote
2answers
170 views
Graphical authentication works; why does sudo say my password is wrong?
I'm trying to install a theme, and when I enter the command sudo cp -r $HOME/Desktop/Overglossed /usr/share/themes the terminal asked for my sudo password which I entered, however I'm told my password ...
5
votes
2answers
2k 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 ...
3
votes
1answer
505 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
0answers
387 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. ...
1
vote
3answers
1k views
PolicyKit error when trying to install/remove programs in the software center
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.
...
0
votes
0answers
266 views
Authentication problems with Windows client and Ubuntu One
I have the same problems as several others. I can't get past the authentication on the Windows client.
Authentication keeps failing! I have reset the password via the Ubuntu One website; I'm 100% ...
0
votes
1answer
347 views
Ubuntu can't update some repositories [duplicate]
Possible Duplicate:
What is the easiest way to resolve apt-get BADSIG GPG errors?
Why can't Ubuntu update some repositories? especially from extras.ubuntu.com, PPA Tualatrix for Ubuntu ...
0
votes
3answers
4k 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 ...
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.
2
votes
1answer
623 views
Google authenticator for the desktop
Is there a desktop application for Google authenticator (an equivalent to the phone app, not the PAM lib)?
2
votes
3answers
4k views
I cannot enter my password when using sudo to install Sophos AV for Linux
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] ...
2
votes
1answer
85 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 ...
2
votes
2answers
506 views
How do I approve specific computers to ssh into a machine with password authentication disabled?
The instructions in help.ubuntu.com/community/SSH/OpenSSH/Configuring recommend disabling password authentication so that "it will only be possible to connect from computers you have specifically ...
1
vote
1answer
563 views
Adobe Air workaround for Pandora not working
I was trying this symbolic link approach because of the problem described here:
http://askubuntu.com/a/120221/70462
After I made the symlink, the installation proceeded further than before, but it ...
1
vote
1answer
240 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 ...
1
vote
3answers
3k views
Cannot connect to Internet from Terminal and other programs (authentincation involved)
I have a brand-new Ubuntu 10.10 installed in a VMWare 7.1 Workstation.
I am in a LAN and we're connected to Internet through a proxy which requires authentication.
I use 3 (three) browsers: The ...
0
votes
1answer
2k 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 ...
