Questions tagged [authentication]
Questions about authenticating wireless connections, SSH keys, or passwords in Ubuntu.
310
questions with no upvoted or accepted answers
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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 ...
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101
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Why does sudo sometimes asks for a different sudo user?
I have all my boxes setup to authenticate against OpenLDAP. When I log on with the local user (localmin) and run a command like
sudo service smbd restart
it sometimes asks for the password of ...
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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 ...
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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.
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Login with facial recognition in Ubuntu 13.04?
I have tried to install „PAM face authentication“ with the following commands:
sudo add-apt-repository ppa:antonio.chiurazzi
sudo apt-get update
sudo apt-get install pam-face-authentication
But it ...
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2k
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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 ...
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696
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I get this message when I try to install software in the Software Center Ubuntu 12.10. No fixes I saw here helped
Software can't be installed or removed because the authentication
service is not available. (org.freedesktop.PolicyKit.Error.Failed:
('system-bus-name', {'name': ':1.168'}):
org.debian.apt....
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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 ...
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Update manager will not update due to authentication error
I press 'Install Updates' and then it will say
Requires installation of untrusted packages
The action would require the installation of packages from not authenticated sources.
then it will ...
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1k
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Can not authenticate form system tools
Whenever I try to run a program from gnome, I get messages like
Authenticated is required to run the Gparted Partition Editor
The same goes for all programs that need root permission and I try to ...
- 1,317
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authentication problem at Ubuntu 12.04
I get this error when I try to authenticate using Gnome GUI. I have NO authentication problem when I use terminal. It is suggested here that I need to do
sudo chown -R myusername:myusername /home/...
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Authentication failure!
At the time of installation i gave login password and that was the login keyring password and authentication password.. then once in user accounts->login options in dat for password options i set as ...
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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 ...
user5964
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Authentication error code 2101
I am trying to launch the cyberghost vpn app. After giving the correct command and password, I get the following message:
Authentication error! The error code returned is 2101.
Wrong login ...
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Wifi stopped getting connected in Ubuntu 20.04
My Ubuntu 20.04 was working all fine, but all of a sudden I am not able to connect to my wifi as it is keeps on asking me for the wifi password again and again.
I tried to remove the wifi password in ...
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Shibboleth configuration in ubuntu 22.04
Does anyone know how to install and configure Shibboleth in Ubuntu 22.04? Any recently updated documentation will be much appreciated.
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unable to login root after cis hardening
after i follow cis 5.4.2 Ensure lockout for failed password attempts is configured to configure faillock and after reboot i unable to login root or other account.
this is my conf
# /etc/pam.d/common-...
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How to Login to SSH with Dynamic username
I some external Gateway through which the ssh requests come and need to log the sessionID in the linux when the connection happens. I can send the sessionID (some string) along with the username while ...
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65
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Allow access to openssh server without authentication
First this is not a duplicate of any thread ive gone thru all of them and either solutions were not working for OPs or they werent working for me.
I want to allow specific user to use my ssh server ...
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35
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How to enable TLS1.3 for wifi connection in ubantu
I am using Ubuntu 22.04.4 LTS (jammy), I want to connect access point of wifi network where authentication method is TLS enable. By default connection handsake initiated with EAP_TLS1.2, I want to ...
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one portal to authenticate different applications
I have installed ojs, koha, dspace7 and moodle succesfully on ubuntu 20.04 and I need to use one portal to authenticate the login to all these service, any guide or technical reference I can rely on ...
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62
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Unable to join and authenticate ubuntu server with AD domain
We have followed up with the steps in the below ubuntu site to configure and join ubuntu server with windows AD domain.
https://ubuntu.com/server/docs/service-sssd-ad
Post completion of steps we are ...
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81
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22.04 update manager hangs waiting for authorization
This used to work on this system, now it doesn't.
Ubuntu 22.04
When I run the gnome update-manager tool (aka Software Update), it hangs waiting for authorization. I am in the sudo group. In the past,...
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224
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SSSD Configuration to Authenticate a one-way trusted domain user
I have a Microsoft "REDFOREST" Active Directory Deployment. I have my REDFOREST domain with all my user accounts. I have my "RESOURCE" domains that have a one-way trust of the ...
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321
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send_pubkey_test: no mutual signature algorithm
Here is the client log output after a ssh -vvv user@machine (I think this problem is related with the deprecation of sha-1). I have already tried to create a new key/par for ed25519, but it doesn't ...
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103
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Cannot make Active Directory offline connection persistent
After several weeks of tries and failure, I finally need to ask for help.
For starters, I use Ubuntu 22.04 LTS, that I have setup with winbind, PAM, Kerberos.
Overall, I am trying to make a ...
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33
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Deja-dup asks for administrator authentication
I am using Ubuntu 20.04 LTS, installed and managed by my workplace.
I have set up backup on my home folder only, each day.
Regardless, an authentication dialogue is opened each time:
"...
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1k
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How to force SSH keys on Ubuntu 22.04 and disable password authentication
I have seen quite a few posts on SSH, but the solution there seem to be not working for me.
I have generated a SSH key on my local Fedora machine using the ssh-keygen command. I then copied the ...
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24
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Unable to login to my remote OSD Ubuntu
When I am trying to login to my Ubuntu I am getting message Sorry, password authentication failed. But I've been using the same password for the past month, also I used the key Right Ctrl+F5 in OSD ...
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Ubuntu 22.04 stuck in login loop on GUI login
I am experiencing a persistent login loop issue on my Ubuntu 22.04 machine. Every time I attempt to log in, the screen blacks out briefly and then returns to the login screen.
Before the issue ...
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396
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Which CA Certificate to use when installing Ubuntu 22.04 from a USB?
I made a bootable USB drive today on Windows, and I am in the process of installing Ubuntu 22.04 on a Windows desktop. One of the first steps in the Ubuntu installation setup is to connect the ...
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348
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VPN connection in Ubuntu 22.04 throws "MS-CHAP authentication failed"
I have Ubuntu 22.04 and a VPN that allows me to work within the servers of the company I work for. Everything worked well until today.
Now, when I try to connect, it says "Authentication failed&...
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50
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Random print before login after restarting in Ubuntu from Windows on a dual-boot
It does not make too much sense, but this just happened.
As the title says I have a dual-boot, Windows 10 - Ubuntu 22 laptop. I have restarted the system (actually switched the operating system from ...
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471
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802.1x wired authentication: How to make NetworkManager ask for identity every time?
I want networkmanager to ask for identity/username every time I connect to the wired network, how can I make this happen?
My current configuration is:
802.1x Security: enabled
Authentication: ...
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25
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Google Chrome stays locked after loging in with fingerprint?
Whenever I log in with my fingerprint sensor Google chrome stays locked and needs a password to gain access to my Google account.
And is there anyway to authenticate with fingerprint?
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103
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Ubuntu authentication error login screen auto blinking?
I am working on Ubuntu that is launched from an Oracle virtual machine. While logging in it is showing an authentication error.
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1k
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Give access to specific Active Directory Groups and local users
I have a server which is connected to the active directory, everything works fine (at least I guess) and everyone can access the server with their AD credentials, but I wan only specific group to be ...
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62
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Permission denied (publickey) but the server is not using public key authentication
I just accidentally used ssh-keygen -R (ip address) but later i found the server authentication is not based on the public key authentication but just password authentication.
now when i type ssh ...
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211
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How can I achieve automatic login to the nomachine web client without providing access credentials？
When I use the nomachine web client, I have to enter a user name and password each time, which is a tedious step for me. I have tried to modify files such as server.cfg, web.cfg and default.nxs ...
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124
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Ubuntu 22.04 does not remember MFA in my microsoft teams account
I'm using Ubuntu 22.04, and every time I connect to my teams account it asks me to do the double factor authentication (MFA). From the admin side, it is supposed to remember the MFA for 90 days and in ...
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806
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On Ubuntu 20.04, unable to ssh to server, after upgrade from 18.04
After upgrading ubuntu from 18.04 to 20.04, unable to connect to host with my user
Below are the logs from auth.log
Mar 28 12:27:13 tpvm sshd[1590]: debug1: userauth-request for user XXXXX service ssh-...
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1
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2k
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Cannot connect to home WiFI - Repeated 'Authentication required'
Problem Description
I recently installed Ubuntu 22.04.2 LTS and I cannot connect to my home WiFi internet connection. Every time I click on my home's WiFi connection, it asks for the password, and ...
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Cannot enroll same fingerprint for multiple users
I am using Ubuntu 22.04.2 LTS Desktop, fresh install. I want to have multiple accounts on Ubuntu machine for different contexts, but when I try to add the same fingerprint on the second user I get an ...
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129
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Authentication Required popup blocked access to my laptop
I see this popup after reboot and it doesn't allow me to login into my laptop. Also I can't enter my password into the textbox.
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Access to remote server via SSH via pem key requests 2 set of password (key and user)
On a remote server, I would like to access via ssh only with a pem key, which is password protected, but I'm being asked for the user account password as well
I created the account which I want to use ...
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66
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How do I close the redundant "authentication required" dialog visible in the corner?
How do I close the redundant "authentication required" dialog visible in the corner?
The way to make this dialog appear is to...
have a laptop monitor on the right and an external monitor ...
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102
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package manager problem ubuntu 22.10
After installation of Ubuntu 22.10, Synaptic Package Manager cannot start because authentication fails. Password was cleared after installation of previous version, so no password was previous ...
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867
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Ubuntu is asking for authentication when booting and before login
Ubuntu is asking for user and password authentication before user's login. It asks when the Acer logo and Ubuntu logo still appear. After inputing a random username and password, it will bring me to ...
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"password authentication didn't work" Can't get past login
So I installed Ubuntu 22.04.1 on my laptop (a legion 5 pro) using VirtualBox. While installing at the part where it asks if we want to Erase disk and install Ubuntu (the option selected) i proceeded ...
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Ubuntu server 22.04 TACACS+ authentication to Cisco ISE not working
I know there are already similar and quite old questions and maybe using tacacs+ is not state of the art but I need to authenticate users on my Ubuntu 22.04 server to a Cisco ISE using the TACACS+ ...
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