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

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1answer
9k views

How to generate Openssl .pem file and where we have to place it

I want to generate a OpenSSL .pem file to allow the remote login via ssh using .pem file at the place of password. I am able to generate key as well as .crt and .pem file using the following sudo ...
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0answers
155 views

ssh not authenticating to kerberos

I am using my single PC as a ssh-client,ssh-server,kdc,admin-server. I am not using any of the virtual machines for this kerberos lab. I am connected to wife get the ip of 192.168.1.224 but i am using ...
0
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0answers
16 views

google authentication error

I have added google authenticator plugin on gerrit server, but when i am trying to login using google oauth provider plugin it is showing "redirect_uri_mismatch" error, i have registered my ...
0
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0answers
76 views

Cannot run install.sh file in Ubuntu 12.04 terminal

I have inherited a Dell Inspiron with Ubuntu 12.04 installed. There is no working wifi so I have purchased a wifi adaptor and extracted the driver and install .sh file on to my pc. I used properties ...
1
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1answer
115 views

SSH-Login with key does not work correctly

I got a system where I want to get access via ssh-keys to. I created an user called monitor and created a file called authorized_keys in /home/monitor/.ssh/ and inserted 2 public keys: Publickey #1 ...
1
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1answer
106 views

Cant authenticate via GUI

I can not authenticate anything that requires GUI authentication...like approve software updates. After each try it says something like authentication was unsuccessful, and closes the dialog after 3 ...
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0answers
264 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 ...
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0answers
142 views

Two factor authentication with password and USB Device for PostgreSQL server

I'm going to setup 2 factor authentication for my database server. I'm using PostgreSQL 9.4 DBMS on Ubuntu 14.10. I need to force two authentication methods for my database server. The authentication ...
1
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0answers
305 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 ...
2
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2answers
172 views

“Authentication is required to check power state for…” after login from encrypted user

One of the users on my system (Ubuntu 14.04) has an encrypted home directory... after I log out of the encrypted user and log into another unencrypted user, I am getting a series of window asking me ...
2
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1answer
189 views

Add SSH key when only public key authentication is available?

This question is more of a general Linux or OpenSSH question than it is specific to Ubuntu but because I'm setting up an Ubuntu server, I'm asking it here. The organization I work for is built on an ...
0
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1answer
25 views

Running Ubuntu 14.04 and recently can't download from software center

Download from software center not possible and got this message " authentication error" I have tried all suggestions but still not fixed yet, I was wonder if anybody can help me out.
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2answers
725 views

proxy authentication error in using app-ppa-repository after exporting proxy settings in ubuntu 15.04

i am trying to add repositories through the terminal after exporting proxy settings. export http_proxy="http://username:password@proxy":"port" export ...
0
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0answers
151 views

Password popup on USB unplug/replug “Authentication is required to change your own user data”

After upgrading from 14.04 to 14.10 when I unplug and re-plug a USB mouse (or switch keyboard/monitor/mouse with a KVM switch.) an authentication popup dialog appears asking for my password saying ...
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0answers
41 views

Disable authentication password

I forgot my authentication password for downloads. So now want to remove it all together I haven't trying any command yet
1
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1answer
75 views

Authentication failure

I'm using ubuntu 3.13.0-24-generic. I know root password and login before (my friend can use su command), root password not change but when i using su command it appear " authentication failure", What ...
6
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1answer
4k views

Could not load host key: /etc/ssh/ssh_host_ed25519_key in /var/log/auth.log

I have an Ubuntu 14.04 instance running on AWS. I was browsing the auth logs (/var/log/auth.log*), and noticed the following line appearing: Could not load host key: /etc/ssh/ssh_host_ed25519_key ...
0
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1answer
166 views

Can a user with ssh keys set their own password after logging in with keys without knowing their password?

I'm playing around with a script to create a user across a number of machines. I'd like to not know the users password at any time, but having the public SSH keys is quite acceptable to me. The user ...
1
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0answers
354 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
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1answer
324 views

Can't log in from terminal

I have a server with a hosting provider (OVH). I've never had any trouble logging in via SSH, but I use RSA authentication, so I'm not sure if I could actually get in with a password. However, when ...
5
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1answer
4k views

how to setup two factor authentication in Ubuntu for Ubuntu users using Google authenticator?

How to setup two factor authentication in Ubuntu for Ubuntu users using Google authenticator (It can also be setup for non Google accounts)?
1
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1answer
220 views

Dovecot IMAP (port 143) not working with SASL while Postfix (port 25) is

I've got SASLAuthd working (via LDAP), and am also successfully able to telnet via port 25 with my LDAP credentials. Postfix is configured with Dovecot. All 3 services are running fine (Postfix, ...
1
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1answer
400 views

Ubuntu Phone (Aquaris 4.5) How to connect to a wifi network wich requires an account?

So I tried to login to the WiFi network at my University, which requires an account and password, but I never came that far. Whenever I select one of the networks (there are 2 usable networks) it ...
1
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1answer
292 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 ...
0
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1answer
215 views

Using wget to download websites when logged in to a password protected session

I am having difficulty downloading websites with wget that require specific authentication. Specifically, my university has me login to my account to be able to access university related websites. I ...
1
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0answers
331 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
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3answers
726 views

Multiple Users Private / Public Keys

I am currently undergoing a project of maintaining a server with certain simple services (mail, web) for a group of thirty users. I would like to use pub/private keys but I guess unsure of their use. ...
0
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1answer
156 views

can't authenticate for wifi n access

Beginning about two weeks ago, perhaps owing to a software update, Network Manager has been unable to authenticate successfully on N type WiFi networks, but continues to work with other network types. ...
0
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2answers
242 views

All sites fail with 401 unauthorized

I have Ubuntu 14.04 LTS and until yesterday everything was fine. Today I cannot access any site (no matter which browser I use). If I start Firefox, it wants to go to: start.ubuntu.com and I get a ...
3
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0answers
545 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 ...
0
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1answer
1k views

Unable to use RSA keys with SSH: Server refused our key

I am trying to use RSA public/private keys generated by PuTTY to log in to two GNU/Linux computers from Windows computers, and it works for one but not for the Ubuntu computer. The keys were generated ...
0
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1answer
381 views

Use Google Open ID to automatically create accounts/login to Ubuntu

What I'd love to be able to do is to have the ability to use Google's Open ID system to have users automatically authenticate with Ubuntu. Yes, it would be Chromium OS-like in its login but there are ...
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1answer
433 views

Using `System.DirectoryServices` on Ubuntu to authenticate with windows active directory

I have developed c# application using monodevelop, which basically does ldap authentication with windows active directory. And works fine in windows environment. but if i use the same code in the ...
0
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1answer
291 views

Wifi connection deauthenticated by router

I use ubuntu 14.04 and I have an Acer V3-571G laptop. I have an O2 Box 6431 modem which I have received from O2. My wifi connection works fine except when I restart ubuntu or laptop. Next time it does ...
1
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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 ...
0
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1answer
147 views

Why isn't my apache authentication working?

I am trying to set up apache2 authentication for a given website which can be found locally on my webserver. When I try to open up the website it states Internal Server Error 500. Then I put the ...
0
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1answer
421 views

How can I use my Active Directory credentials to log in to my Linux machine?

I would like to use the same username/password to log in to my Linux machine as I do for a Windows machine that authenticates against Active Directory. In particular, what I want is: When I log in ...
2
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0answers
386 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 ...
0
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1answer
8k views

Home directory permissions preventing ssh key authentication on Ubuntu Server 14.10

I have ubuntu server 14.10 with an SSH server on it, and have password authentication working fine from my System76 darter laptop running Debian Sid. I want to switch to rsa-key authentication. On ...
2
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1answer
719 views

Check which SSH key was used to login

So stupidly enough in our development team every individual SSH Key is used to access the root user directly. When Checking the auth.log I can find this Dec 18 09:45:04 webserver sshd[12377]: ...
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2answers
43 views

Accessing the computer [duplicate]

I have my son's laptop. He passed away this year and I am trying to access his computer. I dob't have the password or the email address he used. It is asking me for an authentication code when i ...
0
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3answers
235 views

how to run as administrator ubuntu 14.04 and not as guest?

today I installed ubuntu 14.04 and also a new user to the new operating sysytem. there are several problems I am facing with it they are: 1.I cant log in as administrator but as guest,can you help me ...
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0answers
90 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 ...
0
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1answer
2k views

ssh connection fails with and without rsa keys

I've got a machine running Ubuntu in the office.I've got a machine running Mint at home. My goal is to be able to work from home connecting to the office with ssh. I swear i tried to look for similar ...
7
votes
4answers
3k views

Stop asking for authentication to mount USB stick

My Ubuntu 14.04 is asking for my password to mount or unmount an USB stick. How can I change it, so that the mount is automatic and no password input is required ? This is about mounting arbitrary ...
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 | ...
4
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2answers
5k views

Software can't be installed or removed because the authentication service is not available

I'm trying to install flash via the software center and I get this error : "Software can't be installed or removed because the authentication service is not available. ...
0
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2answers
151 views

How to use microsoft isa proxy with authentication on ubuntu 14.04 64-bit

my apt.conf file: Acquire::http::proxy "http://user:password@server:port/"; Acquire::https::proxy "https://user:password@server:port/"; Acquire::ftp::proxy "ftp://user:password@server:port/"; ...
0
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2answers
846 views

Change default user for authentication

When I attempt to perform certain actions within ubuntu I am asked to authenticate with a root user, but ubuntu doesn't give me options for which root user, it just specifies it as the user that set ...
0
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2answers
312 views

rsync + ssh public key asking authentication

After creating the keys and use ssh-copy-id command successfully, I can connect by ssh user@host but when I'm trying to do a transfer via rsync and it asks for password... rsync command is as follows: ...