Hi, My PAM application uses remote authentication module pam_radius_auth.so for authenticating users from remote servers. There can be several remote servers. In this case, can any one please suggest me the best way to gather information on several remote servers such as -- server reachability, (kind of returning array saying server 1 is reachable, server 2 is unreachable) -- do they run radius service ...etc I am trying to use pam_get_env pam_set_env for the above. Please advise, if this is not the proper way. I looked at pam_set_data, but i think this cant be used in PAM application. Best Regards, Ivan