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Two Factor Authentication (2FA) for Linux Logon and SSH Access
miniOrange Two Factor Authentication (2FA) SSH Module provides different 2FA methods for Linux system to local and remote login.

Two Factor Authentication for Linux

miniOrange Two Factor Authentication (2FA) SSH Module provides a secure way to login into the linux servers that enhance the security and makes the brute force attacks more difficult. Two Factor Authentication (2FA) on top of SSH Access, adds an extra layer of security to increase the identity assurance and reduce risk and exposure. miniOrange Two Factor Authentication (2FA) module can be installed on Linux operating systems to add Two-Factor authentication on the top of local and Remote login.


miniOrange supports following Authentication Methods for Two Factor Authentication (2FA):

  • miniOrange Push Notifications (miniOrange Authenticator App)
  • miniOrange Soft Token (miniOrange Authenticator App)
  • OTP Over SMS / Email
  • Google Authenticator
  • Hardware Token

The Module has been well tested on the following Linux distributions.

( If you have other than the following mentioned distributions please contact us )

  • Ubuntu
  • RHEL based systems
    e.g. Red Hat, CentOS

We can connect with any External IDP/Directory

miniOrange provides user authentication from external directories like ADFS, Microsoft Active Directory, Azure AD, OpenLDAP, Google, AWS Cognito etc. It also provides user authentication with other IDPs like Shibboleth, PING, Okta, OneLogin, KeyCloak and many more.

Can't find your IDP ? Contact us on idpsupport@xecurify.com. We'll help you set it up in no time.


Step by step guide to enable Two Factor Authentication ​on SSH access (Linux):

Step 1: Choose Your User Directory

1.1: Setup AD as User Directory

  1. Log in to miniOrange dashboard from the Admin Console.
  2. From the Side Menu, Click on User Stores >> Add User Store

     Single Sign On (sso) configure user store

  3. Select User Store type as AD/LDAP.
  4. Single Sign On (sso)select AD/LDAP as user store

    1. STORE LDAP CONFIGURATION IN MINIORANGE: Choose this option if you want to keep your configuration in miniOrange. If active directory is behind a firewall, you will need to open the firewall to allow incoming requests to your AD.
    2. STORE LDAP CONFIGURATION ON PREMISE: Choose this option if you want to keep your configuration in your premise and only allow access to AD inside premises. You will have to download and install miniOrange gateway in your premise.

    3.  Single Sign On (sso) select ad/ldap user store type
  5. Enter LDAP Display Name and LDAP Identifier of your choice. Select Directory Type as Active Directory.
  6. Enter the LDAP Server URL or IP Address against LDAP Server URL field.
  7. Go to AD FS-> Domain-> respective Users -> Properties-> Attribute Editor. Now copy the value of distinguishedName and paste it against Bind Account DN.
  8.   Single Sign On (sso)configure user bind account domain name

  9. Enter the valid password for the user from above step.
  10. Search Base is the location in the directory where the search for a user begins.
  11.   Single Sign On (sso)configure user search base

  12. If you want to add extra conditions on user search you can add it in Search Filter. Select a suitable Search Filter from the Drop-Down. To use custom Search Filter select "Custom Search Filter" option and provide the search filter in the input field that shows up.
  13.  Single Sign On (sso)configure user search filter

  14. You can also configure following options while setting up AD.
  15.  Single Sign On (sso) configure ldap options

    Here's the list of the attributes and what it does when we enable it. You can enable/disable accordingly.

    Attribute Description
    Activate LDAP All user authentications will be done with LDAP credentials if you Activate it
    Sync users in miniOrange Users will be created in miniOrange after authentication with LDAP
    Backup Authentication If LDAP credentials fail then user will be authenticated through miniOrange
    Allow users to change password This allows your users to change their password. It updates the new credentials in your LDAP server
    Enable administrator login On enabling this, your miniOrange Administrator login authenticates using your LDAP server
    Show IdP to users If you enable this option, this IdP will be visible to users
    Send Configured Attributes If you enable this option, then only the attributes configured below will be sent in attributes at the time of login

  16. Click on Save. After this, it will show you the list of User stores. Click on Test Configuration to check whether you have enter valid details. For that, it will ask for username and password.
  17.  Single Sign On (sso)test ad/ldap connection

  18. On Successful connection with LDAP Server, a success message is shown.
  19.  Single Sign On (sso)ldap successful connection

  20. Click on Test Attribute Mapping.
  21.  Single Sign On (sso) test attributes mapping

  22. Enter a valid Username. Then, click on Test. Mapped Attributes corresponding to the user are fetched.
  23.  Single Sign On (sso)fetch mapped attributes for user

  24. After successful Attribute Mapping Configuration, go back to the ldap configuration and enable Activate LDAP in order to authenticate users from AD/LDAP.
  25. Refer our guide to setup LDAPS on windows server.


1.2: Setup miniOrange as a User Store

  1. Log in to miniOrange dashboard from the Admin Console.
  2. There are 3 ways to setup miniOrange as an Identity Source

    1.2.1 Create User in miniOrange

    • Click on Users >> Add User.
    •  Single Sign On (sso)add user in miniOrange

    • Here, fill the user details without the password and then click on the Create User button.
    • Single Sign On (sso) add user details

    • Click on On Boarding Status tab. Check the email, with the registered e-mail id and select action Send Activation Mail with Password Reset Link from Select Action dropdown list and then click on Apply button.
    •  Single Sign On (sso) email action

    • Now, Open your email id. Open the mail you get from miniOrange and then click on the link to set your account password.
    • On the next screen, enter the password and confirm password and then click on the Single Sign On (sso)reset password button.
    • reset user password
    • Now, you can log in into miniOrange account by entering your credentials.

    1.2.2 Bulk Upload Users in miniOrange via Uploading CSV File.

    • Navigate to Users >> User List. Click on Add User button.
    •  Single Sign On (sso)add user via bulk upload

    • In Bulk User Registration download sample csv format from our console and edit this csv file according to the instructions.
    •  Single Sign On (sso) download sample csv file

    • To bulk upload users, choose the file make sure it is in comma separated .csv file format then click on Upload.
    •  Single Sign On (sso)bulk upload user

    • After uploading the csv file successfully, you will see a success message with a link.
    • Click on that link you will see list of users to send activation mail. Select users to send activation mail and click on Send Activation Mail. An activation mail will be sent to the selected users.

    1.2.3 Self User Registration

    • miniOrange self user registration allows end users to register themselves using customized registration form. miniOrange admin users can customize the registration form by adding more custom fields accodring to their choice. Learn More

Step 2: Configuring Two Factor Authentication (2fa)

  • Login into your End-User Dashboard using Active Directory Credentials.
  • Select Configure 2FA from left panel.
  • 2FA two factor authentication for   End-User Dashboard

  • Browse through the Second factor options and choose an appropriate method to be used by the particular End-User during login.
  • In this guide, we have selected the method "OTP OVER SMS". You can explore the guide to setup other methods here.
  • 2FA two factor authentication for   Enduser 2fa configuration

  • Click on configure/reconfigure "OTP OVER SMS".
  • Enter you phone number along with the necessary country code and click on SAVE below. After the Phone details are saved successfully, click on the Save button on the top bar to set this as your 2FA method.
  • 2FA two factor authentication for   Enduser 2fa phone

  • To use a particular method of 2FA, we configure that method first and then select the method and click on SAVE.
  • Currently used method is denoted by green color.
  • 2FA two factor authentication for   Enduser 2fa phone active

  • Click Here to configure the 2FA method from miniOrange Admin dashboard.
  • Click here for step by step guide to configure 2FA methods for end-users .

Step 3: Configure MO-SSH Module

  • Install the following extensions which are required to proceed for further configuration.
    curl, jq and python
  • Download the “mo-ssh” file.
  • Open your Linux terminal and make sure you are the root user.
  • Execute the following command to install “mo-ssh” module.
    # bash mo-ssh install < path >
    e.g. # bash mo-ssh install /usr/local/bin
  • Two Factor Authentication (2FA) for linux ssh install

  • Enter the miniOrange account credentials.
  • Two Factor Authentication (2FA) for linux ssh credentials

  • Proceed for the following steps once you have successfully logged in.
  • Execute the below command to enable the Two Factor Authentication (2FA) for the users.
    ‹path of mo-ssh file› enable ‹local_username› ‹miniOrange_email› ‹phone_number›
    e.g. # /usr/local/bin enable ec2-user ec2user@xecurify.com ‹ your phone number ›
  • Two Factor Authentication (2FA) for linux enable 2fa

  • Execute the below command to restart the sshd service.
    $ service sshd restart
  • Two Factor Authentication (2FA) for linux restart

Step 4: Test your setup

  • Initiate SSH into your system.
  • Two Factor Authentication (2FA) for linux initiate ssh into system

  • Enter your username.
  • Two Factor Authentication (2FA) for linux enter username

  • It will prompt for the Two Factor Authentication (2FA) verification.
  • Two Factor Authentication (2FA) for linux prompt for 2fa

  • Enter the token.
  • Two Factor Authentication (2FA) for linux access enter token


For further details refer :
https://www.techrepublic.com/article/how-to-setup-two-factor-authentication-in-linux/

We offer Security Solutions of Single Sign-On, Two Factor Authentication, Fraud Prevention and much more.

Please call us at +1978 658 9387 (US), +91 77966 99612 (India) or email us at info@xecurify.com