Questions tagged [authentication]

Authentication is the process of proving your identity to a computer. It differs from authorization, which is the process of granting certain privileges to someone.

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vsphere cannot complete login due to an incorrect user name or password

When I try to login to my vsphere environment, I get the following error: "Cannot complete login due to an incorrect user name or password." I am certain that I am using the correct login information ...
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Self-encryption drives authentication key via Raid controller

Currently, SED keys need to be passed to the drives via Raid controller. We are using that because we don't want someone to go on site physically and enter the password manually everytime we want to ...
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Token-auth-based network file access

We have some NAS devices currently exposed to employees via CIFS (active directory backend for user perms/groups). We are developing a Slurm cluster for processing access-restricted data. Up until now,...
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Outlook 1908/build 11929: Modern Authentication/MFA/App Password behavior

I'm onboarding our clients onto Modern Authentication and am trying to document the behavior of Outlook desktop (2016/365 click-to-run) with regards to MFA and/or App Passwords. The Modern ...
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PAM User account locked out for non consecutive failed login attempts

Using PAM module for authentication purpose for not root user. Configured system-auth and password-auth to in such a way that account gets lockout after 5 failure login attempts. Scenario: Tried 4 ...
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802.1x authenticator for wired clients

I am trying to set up an 802.1x authentication. I have Linux running in a PC which I wanted to use as an 802.1x authenticator and I am connecting a Windows PC to it which will be the supplicant. I am ...
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How to verify sender email address is really the one displayed?

.Hi experts, There are ways to fake the sender email address as I have read. Meaning that if you receive an email, then the"from" email address visible on the frontend in your email client can in ...
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Windows 10 Home - Login screen is now asking for password instead of 4 digit pin

My primary desktop is running Windows 10 Home. Normally when I boot the computer up, I am presented with the login screen where I am asked to enter a 4 digit pin in order to login to windows. Last ...
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How to decrypt your ssh keys with pam_ssh module?

I was following this guide https://wiki.archlinux.org/index.php/SSH_keys#pam_ssh in order to setup automatic decryption of my ssh keys on login with my system password. The problem is that I don't ...
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304 views

ssh-copy-id can not work with `~/.ssh/config`

I am able to login to a server using ssh USER@HOST without password, but password is required if I enter ssh usdev which is configured in ~/.ssh/config like following: Host usdev HostName HOST ...
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124 views

Trouble getting pfSense to Authenticate against my Samba4 DC

Trying to get my pfsense box to authenticate against my Samba4 Active Directory Domain Controller. PfSense Version: 2.4.5 (updated today but it wasn't working before the upgrade, either) PfSense IP: ...
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Openvpn Server with user/password Authentication on windows

i run openvpn server in windows and work correctly with certificated Common name Authentication . my problem is i want setup openvpn server on windows with username and password Authentication (...
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how can i login to my Azure VM with my AAD credentials?

I'm trying to login to my Azure VM with my AAD credentials (login with Azure AD already enabled while creating the VM), a RBAC as " virtual machine administrator login " is also already assigned to ...
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Different sync services continuously conflict resulting in having to reset password over and over again

I have not found a solution to this problem. I have many accounts. Even when using very similar passwords (I know, this is bad) I still forget it, was there a period behind it, or capital, and then ...
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How to set the default user for authenticating a pamac command on Manjaro Linux

I recently added another user to my Linux installation, which I myself also use. When I try to execute the pamac command, It has always asked for authentication with this header: ==== AUTHENTICATING ...
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Failed to authenticate w/ Google Authenticator when configuring OpenVPN client on OpenWRT

I'm quite new to OpenWRT and I'm facing some problems here. I set up the OpenVPN server on a Ubuntu using OpenVPN Access Server web GUI, and correspondingly I got the client profile client.ovpn. Also ...
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43 views

Active directory authentication and LDAP

i am studying Active Directory directory services (AD) and all connected things (LDAP, kerberos, ...). I don't fully understand, how LDAP objects and AD interact between each other. So can you comment ...
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No server entry found for kerberos principal name krbtgt/REALM@REALM

I have been having issues with ApacheDS' Kerberos server recently, and have been unable to, despite my best efforts, figure it out. I fixed an issue before where keys weren't being generated properly,...
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Client or server has a null key while getting initial credentials when trying to authenticate to ApacheDS Kerberos

I am running an instance of ApacheDS, and use it for Kerberos authentication. According to the documentation, the server should automatically generate krb5Key attributes on each LDAP entry for a user ...
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How can I use SALSA20 and POLY1305 in a Linux Terminal?

I am new to this. I can use gpg pretty well in my terminal on Fedora, Ubuntu, and TAILS. I have that figured out more or less. Now I want to use SALSA20 or CHACHA20 and POLY1305 in the terminal too, ...
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66 views

SSH authentication methods questions

These days i look at the SSH protocol and iam trying to figure out how the password and public key authentication methods really work. In password authentication, i know that the client encrypts the ...
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70 views

Self Authenticating Usb

Is it possible put a script on a usb that it only allows the contents of a folder to be discovered (or even whole usb to be undiscoverable), unless certain requirements are met? For example; If I ...
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146 views

“Authentication is required to refresh the system repositories”

A few months ago, I updated Debian to 10. (I believe I'm using Wayland and GNOME?) Among the several problems that suddenly started occurring is the following: Once in a while, I'll come back to my ...
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Freeradius auth issue

i try to explain my problem: I have a debian vm with freeradius package. I've cofigure it and i think it's work fine. But i have a problem with authentication on network device (switch cisco), the ...
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67 views

passwordless pkexec to unprivileged user

For several reasons I want to run my browser as a different system user on my fedora box. For now I created a separate system user named sandbox and created a custom ~/.local/share/applications/...
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Grant admin access to user UAC

All my pc's are windows 10 pro. All the users that use the pc have standard user access. And I have administrator access. There is times like today where the end user needs admin rights to install ...
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123 views

how to use ldap 'Security Group' for httpd hosted Nagios wesite's authentication?

Here is what we are trying to achive: We want to authenticate windows active directory users who are part of perticular "Security Group", for NagiOS. I've created below new configuration file, for ...
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88 views

Can OpenSsh server check for a condition to accept or refuse a connection

I'd like to set up something akin to a 2 factor authentication for logging into a ssh server, provided by OpenSSH on Linux. The client system will have the SSH key for logging in to the system, and ...
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41 views

Cookie session Firefox

WGET need some cookies (because he like those, but not only), because some files are only accessible while authenticated. But i find nowhere how to get these cookies (and i can't autenticate from WGET ...
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195 views

LDAP authentication in Windows Server2019

I have following setup: 1. LDAP Server on RHEL-7 2. Samba 4 Primary Domain Controller(PDC) 3. Windows Server 2019 as Client I am trying to allow login on windows server 2019 with User Account on ...
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74 views

Mutual TLS Authentication with partner : why are they asking for our certificate?

So we are on this project with a partner that should use one of our API. The bosses decided the communication should use TLS mutual authentication. On the server hosting the API, we installed long ...
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69 views

Linux Active Directory login failed because of password

I have a Linux machine that has a connection to the AD. kinit command works correct (it has no output when I run it). But when I try to login to this Linux, I get "Access denied" error. Dec 20 16:33:...
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54 views

What kind of security do authenticator apps use to protect the seed?

I'm not 100% sure if this question is supposed to be here or in Cryptography forum, but I'll try anyway. I would like to have some idea as to how software authenticator apps such as Google ...
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Request passphrase from remote device on boot (phone, workstation, etc) in Linux

I have an encrypted encfs mount on a server running Ubuntu 18.04. I manually have to login to mount the drive, entering my passphrase. Storing the passphrase on the server would make the encryption ...
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3k views

How to reset MFA for my Office 365 account?

When logging in as an Office365 Admin, the user can change his own MFA settings including Authenticator App and Phone numbers (Under Additional security verification) However, this option is not ...
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38 views

How to get access to Macbook/recover data there?

I can't find the account on the login screen anymore that I use to login to my work MAC. The data on my mac is very critical, and I might miss several deadlines if the data is not recovered. The ...
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60 views

Access to a machine mistakenly deleted from AD

I mistakenly deleted a machine (WINDOWS 10) from my company's AD domain, the PC is in the office in Istanbul and I am in Italy, we use a local administrative password generator with expiration so the ...
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346 views

Windows 10 Professional Remote Desktop access denied

I'm trying to access Windows 10 Professional with Remote Desktop from OSX. Everything seems fine, the RD app finds the remote PC and ask me for the credentials to take control of the machine. I tried ...
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229 views

How to make firefox automatically log in on a corporate network website, like Chrome, IE, and Edge do?

I work in a big corporate environment on a windows machine. When I access corporate websites from outside the corporate network, I need to login. When I access corporate websites from any browser, ...
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70 views

Deployed wordpress is now showing basic auth popup instead of login page for wp-admin

I have a wordpress website that hasn't been logged into for awhile, and it appears some auto-update change happened. The wp-admin login screen is now blocked by a basic auth popup. The admin and user ...
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139 views

How to verify an ssh key is valid for a given a host?

I want to test the validity of an ssh passphrase-protected identity file against a given host. I do not want to actually provide the passphrase nor do I necesarily know it, just verify that the ...
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52 views

Azure Container: Docker Push Authentication Issue

I have created a container registry in Azure and logged-in via Powershell. I then run a docker tag, which works, and subsequently, try docker push. However, I receive an error "unauthorized" (see ...
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39 views

How to restart Apache Drill in embedded mode with authentication enabled

I'm trying to set up Apache Drill for development purpose and I can't figure out how to restart Drill with basic authentication (usernname and password) enabled. Running Centos 7, Docker 19.03 and ...
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1k views

MySql 8.0.17 Client does not support authentication protocol requested by server

I'm trying to connect my Node JS application with my MySQL database, but I was getting the client does not support error. So I followed the steps given on the Stack Overflow for that, but I am still ...
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22 views

2FA remote desktop Windows Server

I have a simple Windows Server 2016 instance. What's the easiest way to configure a second authentication mechanism to log in to the instance using RDP? The instance is not configured to be in an ...
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23 views

Public key authentication and change of password

I have set up public key authentication for my Raspberry server. If I change the password of the user authenticated by the public key, shall I recreate the public key? Please advise. Thanks, Dan
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Changing Openstack Keystone admin endpoint

I installed Openstack (using the Ansible-based install method) and my endpoints are: public: 10.10.10.100:5000 admin: 10.10.2.100:5000 internal: 10.10.2.100:5000 However, I need to change the 'admin'...
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110 views

CUPS on Raspberry Pi - Unable to authenticate

cups 2.2.1 on Raspberry Pi 3b+ Linux 4.19.66-v7+ #1253 SMP Thu Aug 15 11:49:46 BST 2019 armv7l GNU/Linux When I attempt to authenticate to perform administrative functions through the web interface, ...
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WKHTMLTOPDF hanging at 10% for site with authentication mechanism

I am facing an issue using WKHTMLTOPDF utility for converting HTML to PDF. Utility is working fine for local files and for websites which do not require authentication but for sites with an ...
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178 views

Kafka sasl scram auth issue

We have setup three node kafka and zookeeper cluster and setup sasl scram authentication on kafka broker level but when i am trying to start broker getting below error . Please help to fix it . [...

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