6.3. Infrastructure - HOW-TOs# 6.3.1. Two-Factor SSH Authentication with LinOTP 1 Introduction 2 Prerequisites 3 Direct authentication via LinOTP web interface (no RADIUS server needed) 3.1 pam_linotp 3.2 pam_py_linotp 4 Authentication via RADIUS 4.1 Connect to RADIUS via PAM (libpam-radius-auth) 5 Final Configuration of the SSH server 6 Test 6.3.2. RADIUS Authentication with return of attributes Activating the rlm_module in freeRADIUS Configuration of the LDAP module in freeRADIUS Connection of the LDAP module with the LDAP servers Customize the filter for users Adjustment of the filter for the attribute to be returned Configuration of the site linotp Check group membership Testing the function Start the freeRADIUS server in debug mode: Starting a client request to the RADUIS server: 6.3.3. Indices and tables# Index Module Index Search Page