Hi Alan, i would like to imagine a second LDAP Server for a Failover. I want to implent my Windows LDAP Server for Authentification via WLAN. The login on LDAP1 works, but when i`m blocking the first LDAP1 Server with the Iptable-Command, the connection to the Failover Server, LDAP2, couldn`t etablished. I`m following this Tutorial: *Click* -> I`m worked to this Tutorial Step-by-Step. On the last two steps, i`m configured Freeradius to use ntlm_auth > This was obviousy wrong, cause i want to implement LDAP-Severs. But this Configuration still works with one LDAP Server without a second Failover Server. (At least, the login via WLAN with LDAP Authentification data works.). This are the files, which i`d edit: /etc/freeradius/users DEFAULT Auth-Type = ntlm_auth # > Change it to LDAP, right? .... /etc/freeradius/radiusconf ... # Did i need these Settings in this Version? redundant { ldap1 ldap2 handled } } /etc/freeradius/sites-enabled/inner-tunnel ... authenticate { ntlm_auth # Change it to LDAP, right? ... I`m editing this file, after your Post: /etc/freeradius/users DEFAULT Auth-Type = ldap .... After changing, I`m getting this Error: /etc/freeradius/users[1]: Parse error (check) for entry DEFAULT: Unknown value ldap for attribute Auth-Type So, ldap isn`t possible as Auth-Type? Which one i`must using? /etc/freeradius/sites-enabled/inner-tunnel ... authenticate { ldap ... Thanks for Help! I´m working with Linux since 4 weeks, so its hard to be aware of all functions of Freeradius and Linux.