Hello, After several hours of research I don't understand howto configure FreeRadius to use two ldap servers. With only one ldap server all is OK ! I run FreeRadius 1.1.7 under Fedora core 8. Below I present you a radiusd.conf extract and a logof a session. In the og I put a start at the beginning of lines which I don't understand. Thanks you for your help ---- radiusd.conf extracts modules { ldap ldap1 { ... } ldap ldap2 { ... } ... } authorize { ... Autz-Type ldap_1 { ldap1 } Autz-Type ldap_2 { ldap2 } ... } authenticate { ... Auth-Type ldap_1 { ldap1 } Auth-Type ldap_2 { ldap2 } ... } ... ----------- log extracts rlm_ldap: Registering ldap_groupcmp for ldap1-Ldap-Group rlm_ldap: Registering ldap_xlat with xlat_name ldap1 * rlm_ldap: Over-riding set_auth_type, as we're not listed in the "authenticate" section. ... rlm_ldap: Registering ldap_groupcmp for ldap2-Ldap-Group rlm_ldap: Registering ldap_xlat with xlat_name ldap2 * rlm_ldap: Over-riding set_auth_type, as we're not listed in the "authenticate" section. ... modcall: leaving group authorize (returns ok) for request 0 * auth: No authenticate method (Auth-Type) configuration found for the request: Rejecting the user auth: Failed to validate the user. Login incorrect: [myname/password] (from client XXX port 0) -- Jean Frontin<BR> System team<BR> I R I T <BR> Université Paul-Sabatier<BR> 118, rte de Narbonne<BR> 31062 Toulouse cedex 9<BR> France<BR> tel (33)(0)5 61 55 63 03<BR> mail frontin@irit.fr<BR>