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

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5
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6k views

I can SSH into a remote host but get “Connection reset by peer” with SSHFS, what do I miss?

I created a key pair to connect to a Synology disk from 12.04. Deployed, edit ~/.ssh/config to automatically use it. Tested: ssh user@remotesynology -> works like a charm. Tested on a second remote ...
4
votes
0answers
114 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
119 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
444 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
657 views

How to have cntlm configuration per user?

This tutorial http://zipizap.wordpress.com/tag/cntlm/ suggests configuring cntlm using the file etc/cntlm.conf. It works great, but it means that all users logged to the machine will be using the same ...
3
votes
0answers
232 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
65 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
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0answers
90 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
votes
0answers
365 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
849 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
177 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
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0answers
48 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
votes
0answers
147 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
607 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
votes
0answers
339 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
368 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
votes
0answers
910 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
48 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
27 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
19 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
128 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
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0answers
242 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
243 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
208 views

After moving home directory, ssh configuration is not working

I moved my home directory from /home/user to /media/newDrive/home/user. Everything seems to be working at first, except my ssh configuration. I was able to log into this machine from my laptop with ...
1
vote
0answers
310 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
927 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
77 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
87 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
vote
0answers
369 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 ...
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0answers
411 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
38 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
45 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
46 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
106 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
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0answers
29 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
223 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
595 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 ...
1
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0answers
205 views

pam radius module access-reject

I am trying to set up an Ubuntu server that my users will connect to. I already have a Radius server running on a Windows box, and I would like for connections to this Ubuntu box to authenticate to ...
0
votes
0answers
37 views

client authentication via sssd/ldap

I'm struggling with an annoying server (14.04.03) setup. We basically want to enable users login via sssd/LDAP, so they can access the machine with ssh. I've followed various tutorials (e.g. ...
0
votes
0answers
12 views

Fingerprint reader authenticates but does not close dialog box

I have a T550 which sports the following reader: Bus 002 Device 016: ID 138a:0017 Validity Sensors, Inc. After plenty of tweaking around I managed to get it to work. I managed to register my ...
0
votes
0answers
28 views

Problems with wifi connection (after going from 12.04 to 14.04 LTS)

the last problem I cannot get rid of after looking here is the wifi failing to authentication to my fritzbox on a regular basis. in ~ 2/3rd of the attempts, regardless if freshly booted or awaked from ...
0
votes
0answers
14 views

First Time Ubuntu user, problem authenticating app download

I am new to ubuntu... as in just installed it a little bit ago. I no nothing about ubuntu but thought it would be a fun thing to explore a new operating system. I got it installed ok and was ...
0
votes
0answers
41 views

“System Program Problem Detected” at login

I keep getting the system report of system programs: the action is com.ubuntu.apport.apport-gtk-root. Why is this happening? Should I authenticate it? I haven't allowed it since I'm not sure what ...
0
votes
0answers
45 views

Why is “authentication” not working with my user login password?

I'm trying to install Steam. I've downloaded it then right click the folder and hit "Open with Software Center". When I attempt to install, it asks for a password to authenticate. So I typed in my ...
0
votes
0answers
68 views

kerberos passwd: Authentication token manipulation error

(note - ignore the upgrade 15.10 bit, see "more info", below) I've just upgraded to Ubuntu 15.10 using the Live CD over an existing 14.04 version. Users that were configured before were lost from ...
0
votes
0answers
12 views

How to make Apache2 login using PAM and access files using file system permissions?

I've searched & Googled for hours but haven't found recent solutions (re: PAM, mod_auth_pam or something ... is obsolete). I want users to login using their ubuntu usernames and password, so I'm ...
0
votes
0answers
24 views

Authenticated OpenVPN before User Authentication

Is it possible to prompt the user for OpenVPN credentials before they are required to login? Our problem is that the ubuntu laptops we distribute use LDAP for authentication, but since our LDAP is ...
0
votes
0answers
21 views

Sudo: chronic authentication failure on X operations

Sudo works fine from the command-line, but I've never been able to get authentication to work right when a GUI asks for it. Starting X apps from the command-line w/sudo sort of works, but causes weird ...
0
votes
0answers
26 views

How can I debug /etc/ldap.conf mapping?

I'm trying to configure an ldap client. I'm almost successfull (LDAP server is answering requests) but: In the /etc/ldap.conf, mapping configuration seems to be broken map passwd uid login map ...