Hi, Is there a good how-to(s) or book(s) that describes all of the different parts that can be used for Secure Network/Application (i.e. Samba, mail and/or SQL database Account) Authentication, and when/why you should use certain pieces? Preferably some references that don't presume too much about my Linux/Unix knowledge level? E.g., how do ldap, pam, sasl, ssl, nss, etc etc etc all relate/work together... I'm just a bit confused (yes, I'm a newbie, so shoot me :) ... TIA