Hi, I'm a newbie for Freeradius. I've implemented this type of structure: APPLICATION --> PAM --> FREERADIUS --> SQL I want substitute SQL with a LDAP backend; I don't need any type of accounting; I just want that application check userid and password on my LDAP server. How can I accomplish that? MySql seem to work but frequently I get this type of error in radiusd.log: Nov 29 18:04:11 public20 safesquid: pam_radius_auth: RADIUS server 212.80.192.120 failed to respond Nov 29 18:04:11 public20 safesquid: pam_radius_auth: All RADIUS servers failed to respond. Nov 29 18:04:11 public20 safesquid: pam_radius_auth: RADIUS server 212.80.192.120 failed to respond Nov 29 18:04:11 public20 safesquid: pam_radius_auth: All RADIUS servers failed to respond. Nov 29 18:04:15 public20 safesquid: pam_radius_auth: RADIUS server 212.80.192.120 failed to respond Nov 29 18:04:15 public20 safesquid: pam_radius_auth: All RADIUS servers failed to respond. And I don't know why this error appear. Can anybody help me? Thank's, Maury76