Questions tagged [authentication]

A process of proving that an entity (commonly a user or organization) is who they claim to be, or who they were previously identified as being. Authentication does not guarantee that particular entity's identity absolutely, it just proves that they are the same agent that has previously successfully asserted their identity. There are three factors (types) of authentication, and a particular authentication process may combine two or more different factors.

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26 views

Can I use SCP while having multiple AuthenticationMethods, like publickey,password?

My task is to create a bash script that will copy files from server2 in my server1. The issue is that I can't connect from one server to another. I have whitelisted server1 IP on my server2 22 port. ...
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How can I authenticate through application credentials to OpenStack using the CLI?

I know how to authenticate through user credentials and token to OpenStack via the openstack CLI. Now I would like to know how to use application credentials to authenticate. Using ...
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How should I authorize calls to an API behind an Apache reverse proxy behind CAS authentication?

Apologies if this is incoherent. I'm very new. I have an Apache server protected by CAS in a Docker container. I'm using mod_auth_cas to do this. I have an API running on a different container which ...
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Apache with mod_authnz_external giving blank password

I am using apache2 with mod_authnz_external and pwauth for authentication. pwauth itself works (I verified by calling it from the command line), however when used by apache, I always get error code 2 ...
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Why isn't Kerberos used for SSO to cloud apps?

When comparing Kerberos to SAML, a common argument on StackOverflow sites and the rest of Internet is that SAML is for Internet / cloud applications while Kerberos is for enterprise LAN. There are ...
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LDAPs Simple Authentication on Tomcat 9

I have a web application running on Tomcat 9 and using LDAPS for user Authentication. When I connect via LDAP (non-secure) the authentication is successful but when I switch to LDAPS (Secure) I get &...
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Can you implement token based authentication/authorization without a 3rd party?

fyi I'm a total newbie to server stuff (I'm an app developer, trying to implement a simple but secure api back end) It sounds simple enough, user sends his username/password, if it authenticates, you ...
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nginx unicorn rails authentication failure

I am following this tutorial to deploy a rails app on my cloud server. It's my first time deploying a rails project on a server. When trying to start unicorn or nginx from folder /app/current and user ...
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Is it possible to configure a machine wide WinRM client default authentication?

WinRM is the protocol used by Windows Machine when running remote commands, WinRM supports several authentication schemes. Is there a machine wide setting to control the default authentication ...
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Domains have been verified, but Google still says app has not been verified

Message in the consent screen settings: Comply with domain verification requirements Ensure your application's domains have completed the Search Console verification process But... all my domains on ...
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How do I allow users from a specific group only to access (apache2, mysqli)?

I'm trying to set up an authentication system based on basic apache2 auth. For this I configured mod_authn_dbd to use a mysqli database set up like this: https://www.howtoforge.de/anleitung/passwort-...
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Lastlog to include ssh proxyjumps and imap authorizations

I want to know which of my users still actively use my server. The command lastlog tells me when they last logged in per ssh and spawned a shell on the server. It however does not tell me when they ...
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dovecot: imap-login: Aborted login (auth failed, 2 attempts in 2 secs) - usually working - perhaps timeout issue? Debug options?

I have a mail server with a few dozen IMAP accounts. The configuration is correct for each account, every one of them tests OK. When a client from a particular, very slow Internet connection attempts ...
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Cloudflare Load Balancer 405 Error on Post Request

I am currently having issues making POST requests to a load-balanced backend. (The load balancer is managed by Cloudflare). Making POST requests directly to the individual servers does not cause any ...
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Managing Authentication on REST APIs

The scenario is, I want to manage authentication in several REST APIs deployed in different environments. I've been reading about the Vault, and apparently, it has this feature. With Vault is possible ...
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allow ssh AD authentication while keeping few local users

Need to use AD for user authentication in Linux servers, while keeping only a limited (1-2) local users. AD authentication is done through the Kerberos. pam.d file configuration as follows cat /etc/...
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What will happen if a kerberos timestamp will be futuristic?

In kerberos authentication, the encrypted messages are added a timestamp, in order to prevent replay attacks. Basically once someone decrypts a message that was sent for him, it compares the timestamp ...
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DMZ Member Servers unable to return or authenticate internal domain accounts

I have DC in a DMZ where I can easily look up domain accounts from our internal domain under the NTFS permission if I tried to add users/groups to folder NTFS permission whiles logged in to the DMZ DC....
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Some clients can only authenticate to VPN when connecting as Administrator

I'm trying to set up users to connect to our Azure-hosted network over a VPN. All client machines are running Windows 10. The connection is installed on the client machines by directly adding the ...
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ssh to same host from 2 different clients, not same list of authentication methods?

I have a usb gadget exposing itself as network card, and allowing to ssh to it. From my laptop I can authenticate using password method: $ ssh -v -v -v -o PreferredAuthentications=password -o ...
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SSH login not working with Kerberos

I am trying to perform SSH login using Kerberos authentication. Instead of Kerberos, password is prompted for login. There are three computers : client, kdcserver and service (SSHD server). Client is ...
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Get diagnostics information from failed connect from Grafana to InfluxDB

I've tried to set-up a local Grafana instance in a Docker container and I'm trying to connect to my local InfluxDB that is running on the same machine. I can connect to InfluxDB without any issues, ...
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How can the other users from Slapd log on to Samba?

We run an open source image processing web application. This provides users with a Windows network drive for uploading gigabytes of image data. The application offers the convenience that a network ...
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Podman not using credentials from authfile

I am in the process of deploying a containerized application that is created from an image stored in a private registry that requires authentication to access. Since I am using Ansible 2.9.14 I must ...
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Request time out for validating and showing information of the token

I could not understand what the difference of X-Auth-Token and X-Subject-Token is. I read in the documentation that "X-Auth-Token is a valid authentication token for an administrative user" ...
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Could not recognize Fernet token in token authentication

I have username and password. I would like to authentication the token. First, I sent a request to password authentication api of keystone and I got an audit_id. Then, I send a request to token ...
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ca-certificates.crt doesn't include my custom CA certificate after “sudo update-ca-certificates”

I'm trying to install the public CA certificate of a 3rd party service, onto a Debian instance. I'm doing this so that the SSL certificate of the 3rd party service that I'm connecting to can be ...
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Authentication using two separate Kerberos realms

Scenario I run a FreeIPA server (v4.8.7) for identity and access management (IAM) to manage enrolled hosts on domain aaa.example.com (e.g. host1.aaa.example.com). IPA server is at ipa.aaa.example.com. ...
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SSH: Access denied for 'password'. Authentication that can continue: publickey,gssapi-keyex,gssapi-with-mic,password,keyboard-interactive

I could login without a problem before and after 4 weeks of vacation I can't anymore. I have a MAC and im trying to use x2go or terminal to connect to the server. This is what happens when i try to ...
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Restrict web access on apache web server to FreeIPA users

We have an apache web server installed on a Centos 8 machine which is been used to easily expose user and group folders both internally and to other collaborators. Most of the data exposed is plain ...
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Web page that is authenticated against multiple kerberos authentication servers

Basically I have configured kerberos authentication for a web page hosted on apache server. How can I get users from another kerberos authentication server on another machine to authenticate with the ...
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MySQL 8.0 Installation on Unbuntu 20.04 authentication_string Message

i followed several tutorials to install MySQL 8.0 on Ubuntu 20.04. Everything works with no errors reported in the mysql log. The question i have is that when i enter this command: SELECT user,...
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error code 401 when call ping search image api

https://api.bing.microsoft.com/v7.0/images/search?Ocp-Apim-Subscription-Key=9e572eb4609e4042b490fc42b2cb004c&q=apples {"error":{"code":"401","message":"...
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Is it possible to use a auth_basic password protection using linux users and passwords?

I'd like to password protect a website allowing only Linux users and their passwords stored in /etc/passwd and /etc/shaddow to login. Apache and nginx allow to restrict accessung by using a HTTP ...
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Kerberos Authentication requested cipher removal

Kerberos Authentication help required. Please find below: I am doing domain join from my Client machine(Freebsd 10.1) to KDC(Win2012) Client machine: uname -a FreeBSD 10.1-RELEASE FreeBSD 10.1-...
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How to give permissions to local computers using computers' MAC addresses in Windows Server 2016 for file sharing

I have the following issue: I have a server with Windows Server 2016, and I need to use it only for saving, reading, and modifying files with file sharing. The way I have the restrictions is with ...
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ownCloud stay logged in with files_external

I'm using ownCloud via the Docker image owncloud/server:10.5 and miss a Stay logged in checkbox. The documentation says that apps like files_external will disable this checkbox. There are some users ...
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PAM in Linux: any way to skip local auth if remote/external auth DB returns a negative response?

Dear fellow system tinkerers, an admin friend has asked me the following question: On a number of network elements and servers, he's using remote authentication against a TACACS+ server. On some such ...
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How can I authenticate users inside a docker container against the host system's SSSD which itsself retrieves user data via LDAP?

I have a container host on which users are authenticated against a company Active Directory using SSSD with LDAP. On this host I have several docker containers running. Some of these containers just ...
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WPA2-EAP MSCHAP-V2 NTLM_AUTH and SQL auth

Good morning, I've running an instance of freeradius 3.0 to use WPA2-Enterprise authentication on my wireless lan. The authentication aggainst the AD works like a charm using ntlm_auth, but now I'm ...
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Accidental chsh command leads to broken PAM authentication

I accidentally ran the command: chsh -s bash as root and now no password authentication works for root or any users. I have a single SSH session from which to fix it. I can't even open a second root ...
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Radius Authentication error between Active Directory NPS - Aruba 2930f

I am trying to configure Radius authentification using NPS backend. I have configured both ends but it does not seem to work.I am not sure if this is even correct. Kindly help. NPS Config: I have ...
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vsftpd Authenticating FTP server against Windows AD server not working Ubuntu

I'm trying to authenticate vsftpd on an Ubuntu server against my Active directory server. I have joined the domain successfully following this article: https://nerdonthestreet.com/wiki?find=...
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LogonUser too slow

I have domain machine, but I need to perform logon in non-domain network. But in case this machine in non-domain network, LogonUser function very slow. It takes ~1.5 min. Logon type - ...
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Windows authentication doesn't work for around 30 minutes?

I have a site on IIS that uses windows auth for logins and it works 99% of the time. But on some days there will be a period of time where logging in just won't work for around 30 minutes, it keeps ...
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Join a Linux (ubuntu 18.04) Instance to AWS Directory Service (Directory type: Microsoft AD)

I followed the document https://docs.aws.amazon.com/directoryservice/latest/admin-guide/join_linux_instance.html Everything was working fine, but suddenly started to fails. I decided clean all and ...
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WSO2 - Analytics Dashboard authentiation with Active Directory

My environment : Centos 7.8 server , installed via yum : wso2ei-6.6.0-1.el7.x86_64 . I follow instruction : "Configuring a Read-Write Active Directory User Store" It works, I can access to &...
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Proxy server capable of injecting authentication parameters/headers into the request

The idea is to have a proxy server(like SOCKS4/5, but for HTTP protocol), the purpose of this proxy server is to authenticate requests on behalf of the users, by manipulating the requests. For example ...
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Does AD B2C offer in-app authentication instead of jumping to b2clogin.com

my customer is using AD B2C to authenticate their users to their web sites and mobile apps. However, the requirement for one of the apps is that the sign up process should be done IN-APP, meaning that ...
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Using SSSD with multiple LDAP servers/domains

I need to authenticate users using two separate LDAP servers. Have configured SSSD with two domains but only one seems to be working. I ran the command authconfig --enablemkhomedir --enablesssd --...

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