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

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5
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0answers
132 views

Why is “Authentication is required to …?”

When I plug an SD card into the SD card reader (/dev/mmcblk0), a popup appears, saying: Authentication is required to mount a device. When I plug in a VGA cable between my laptop and an external ...
4
votes
0answers
116 views

Ubuntu One oAuth token - time of life

I try to develop some Java application that works with Ubuntu One account. Everything is ok, I have access to my U1 space but I'm not sure of one thing. How long may I use my oAuth token? Has it some ...
3
votes
0answers
172 views

Remove the “Authentication is required for …”

I'm terribly sorry if this has been answered somewhere else but I've read through many forum posts and still haven't found a fix to my issue. Recently installed Ubuntu 12.04 then updated to 14.04 ...
3
votes
0answers
527 views

Samba keeps warning 'Session closed for user nobody'. Why?

I've set up an Ubuntu 14.04 server, using Samba to share files to our Windows clients. Everything appears to be working correctly, but while checking my auth logs, I see the line 'session closed for ...
3
votes
0answers
234 views

Authentication problem-I can't enable my wireless driver

I have just installed Ubuntu 12.10 after trying it on a usb stick which worked fairly well. But currently I am not able to install anything because every time I want to do something I'm prompted to ...
2
votes
0answers
8 views

Apt proxy settings are not transmitting username/password

On a 12.04 server machine, I've got Apt configured to use a proxy to grab its packages. To wit, in /etc/apt.conf.d/80proxy, I have the two following lines: Acquire::http::Proxy ...
2
votes
0answers
85 views

In Ubuntu 14.04, password works for system login but nothing else

TOTAL noob here, having installed Ubuntu 14.04 on my laptop (with some difficulty, as I have no clue what I'm doing). I set a strong login password that continues to let me log in to my system. I can ...
2
votes
0answers
112 views

14.04 samba-winbind pam_mkhomedir.so home directory ownership

After joining ubuntu 14.04 to our Active-Directory Domain using samba-winbind pam_mkhomedir creates home, but ~/.config and other directories are owned by root, preventing graphical login. Please ...
2
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0answers
383 views

How do we implement requirements of password policy?

This question might look similar but I could not find a solution to this which covers all the below requirements of the policy, Hence please help me: - Incorrect pass lockout (after 3 incorrect ...
2
votes
0answers
1k views

Can't authenticate against LDAP. /etc/nsswitch.conf seems to be ignored

Running ubuntu 14.0.4.1 on a BananaPi (ARM). I've had a lot of luck getting LDAP authentication to work under 14.0.4 on x86, but something about this just isn't working. If you run getent passwd | ...
2
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0answers
198 views

lubuntu completely ignoring ldap setup. Followed guide, no contact with ldap server

We have LDAP authentication working on every other server and lxc container in our enterprise, but when we try and have a brand spankin new Lubuntu 14.04 installation do the same, it's completely ...
2
votes
0answers
54 views

Validate password against regular expression?

Is it possible to somehow set a regular expression that would validate a user's password? So that if the regexp is set to: ^qwerty|йцуке$ than both qwerty and йцуке will be valid passwords. I want ...
2
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0answers
175 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 ...
2
votes
0answers
632 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 ...
2
votes
0answers
2k 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
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0answers
345 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 ...
2
votes
0answers
381 views

Atheros ar9285 can't connect to specific AP

My laptop (asus UL80J) has Atheros AR9285. the ubuntu is 12.10 -64 bit the problem is my wirless adopter work good with all AP that I have except one I tried: dmesg |grep wlan And it gave me ...
2
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0answers
932 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
0answers
91 views

Problem when setting 802.1x authentication in Ubuntu 16.04

I live in a campus and we need to set certificates and private key in 802.1x tab to connect. The problem is that when I try to add the private key, it says: "Unencrypted private keys are insecure" and ...
1
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0answers
21 views

Configuring NFS mount to use LDAP user id

My research group uses LDAP authentication for all the desktops. However, we've purchased a few laptops and would like to set them up so that they don't require LDAP authentication (so we can work ...
1
vote
0answers
17 views

Not able to run jhbuild:Error executing command as another user: Not authorized

I am running jhbuild sysdeps --install After running this command it is asking for authentication: ==== AUTHENTICATING FOR org.freedesktop.policykit.exec === Authentication is needed to run ...
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0answers
27 views

PAM USB: require USB device only for some users

I have configured the pam_usb module on my Ubuntu 14.04.4 system. The current common-auth rules look like this: auth sufficient pam_usb.so auth [success=1 default=ignore] ...
1
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0answers
25 views

15.10 Biometric Auth

I have seen biometric authentication such as Pam-face-authentication and the such, but when I tried to get it to work, it didn't do anything, I realised it was old, does anyone know of a good ...
1
vote
0answers
151 views

org.freedesktop.accounts.change-own-user-data asks me for password

I'm on Ubuntu 15.10. with multiple users configured. Each time I switch to another user and come back to my account, I have a prompt windows asking me to enter my password. Sometimes it works, ...
1
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0answers
47 views

How to use a proxy that requires authorization without exposing credentials (username and password)

There are knows ways to setup internet and system updates access through a proxy by setting the environment variables (http_proxy=) and/or updates' config options (like Acquire::Http::Proxy). There ...
1
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0answers
20 views

Apache Authentication

I configured the authentication on Apache2 with .htaccess and .htpasswd files. Now my problem is that when I close the browser or the browser tab, remain logged in without me being prompted for ...
1
vote
0answers
232 views

Can't SSH with Key Authentication

I created an RSA keypair using ssh-keygen on Ubuntu Desktop 14.04.2 LTS ssh-keygen -b 2048 -t rsa -f ~/.ssh/<keyname> -o Than I added the public key to the remote Ubuntu Server 14.04.2 LTS ...
1
vote
0answers
295 views

Why do I have to set usePAM to 'no' to manage a ssh connection?

I have a system user named user1 (the main one). I've tried to set a ssh connection between a user named foreignuser and the main one (user1). For that, I've generated a couple of keys with ...
1
vote
0answers
334 views

Can someone help me escape Skype and use Ekiga?

I really want to escape from Skype because its Linux support is abysmal and its ethics questionable. The most prominent alternative seems to be Ekiga, but I just can't get it working. Could someone ...
1
vote
0answers
326 views

Authentication not working properly after using fingerprint authentication in Ububtu 14.04

I installed fingerprint-gui to use fingerprint scanner in my thinkpad. The commands used were sudo apt-add-repository ppa:fingerprint/fingerprint-gui && sudo apt-get update sudo ...
1
vote
0answers
1k views

What is the correct way to modify /etc/pam.d/common-auth?

By default /etc/pam.d/common-auth looks like this $ cat /etc/pam.d/common-auth # # /etc/pam.d/common-auth - authentication settings common to all services # # This file is included from other ...
1
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0answers
85 views

Can login via ssh, but not system tty

Here's something weird. I can: ssh xyz@localhost provide my password, and login as xyz. However, I if hit ctrl-alt-F3 to go to the system prompt, and try to login as the same user xyz I get a ...
1
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0answers
94 views

Installing Google 2 step Authentication causes SSH to not connect

I am following the instructions here https://www.digitalocean.com/community/tutorials/how-to-protect-ssh-with-two-factor-authentication After making the changes listed to /etc/pam.d/sshd and ...
1
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0answers
408 views

Lubuntu 14.04: fatal GDBus Error upon session login

Two days ago I freshly installed a Lubuntu Desktop 14.04 on an old Centrino M with 2 accounts: uid 1000 (administrator) and uid 1001 (general user) Until an hour ago all was well. Then shortly ...
1
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0answers
416 views

How to change proxy settings with authentication?

I am using Ubuntu 13.04 and having WiFi connection with proxy settings and authentication. By following some tutorials I successfully changed /etc/apt/apt.conf with the values Acquire::http::proxy ...
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0answers
44 views

fprint-demo casusing authentication failure

I installed fprint-demo in Ubuntu 14.04 unfortunately I did not setup the finger prints and when I try to log in; its denying my password. I tried to remove the password in recovery mode: rw -o ...
1
vote
0answers
47 views

Why does sudo sometimes asks for a different sudo user?

i have all my boxes setup to authenticate against openldap. when i logon with the local user (localmin) and run a command like; sudo service smbd restart it sometimes asks for the password of ...
1
vote
0answers
47 views

I have upgraded my system from 12.04 to 14.04 after restart when im tried to login authenication error came

I have upgraded my system from 12.04 to 14.04. After restart, when I tried to login, an authentication error came. After that, I used sudo apt-get install -f and rebooted the system. I didn't get any ...
1
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0answers
125 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 ...
1
vote
0answers
32 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.
1
vote
0answers
246 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 ...
1
vote
0answers
682 views

Polipo HTTPS Authentication Problem

I use internet behind http proxy, and that requires authentication. I tried using polipo to bypass the authenticated proxy to 127.0.0.1:9134. Applying these settings to my browser, works fine for ...
0
votes
0answers
8 views

How to overwrite PAM rule from `common-auth` ? (`nullok` to make sshd accept empty passwords)

I got advice to change pam configuration (as I look for a way to make ssh user with empty password): sudo sed -i 's/nullok_secure/nullok/' /etc/pam.d/common-auth However in /etc/pam.d/common-auth I ...
0
votes
0answers
23 views

Ubuntu 16.04 doesn't support PEAP authentication without CA certificate

In our college, we have PEAP authentication system for LAN Authentication. With the new Ubuntu update to 16.04, the PEAP Authentication asks for the password again and again and doesn't connect. It ...
0
votes
0answers
8 views

How to auto open web browser on network connect

Sometimes when I come across certain networks i.e. (school, work etc.) that need me to open my web browser to authenticate. Does anyone know how I can make it so when I connect to a specific SSID ...
0
votes
0answers
18 views

Can't login in cups web console

I don't know why, but I simply can't do any administration tasks simply because I can't login in cups web interface. This is my cupsd.conf: LogLevel warn MaxLogSize 0 Listen localhost:631 Listen ...
0
votes
0answers
10 views

authentification for external and internal device

I'm wondering why should I input each time my password for "conect" to my second hardrive, and worse, each time when I try to use an usb-stick and when I eject it... I have the same configuration in ...
0
votes
0answers
72 views

How to solve server certificate Verification failed!

Recently I installed a complete ubuntu package on virtualbox and use it via vagrant ssh in windows.from yesterday i have a annoying problem,I cant use sudo commands for install,update or everything ...
0
votes
0answers
22 views

Authentication error setting up mail server

I'm setting mail server using dovecot pop3 in ubuntu 14.04. But username doesn't match with password and show the following error: telnet localhost 110 Trying 127.0.0.1... Connected to localhost. ...
0
votes
0answers
10 views

Lightdm - Login using two passwords?

I was thinking of an extra security layer by using two passwords for login. Is it possible to configure lightdm in such a way that it will ask you for two correct passphrases? I thought of including ...