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 - [LDAP: Hardening Server Security (so administrators can sleep at night)](https://ff1959.wordpress.com/2013/07/31/ldap-hardening-server-security-so-administrators-can-sleep-at-night/)
 - [LDAP Authentication Best Practices](http://web.archive.org/web/20130801091446/http://www.ldapguru.info/ldap/authentication-best-practices.html) - retrieved from web.archive.org
 - [Hardening OpenLDAP on Linux with AppArmor and systemd](http://www.openldap.org/conf/odd-tuebingen-2018/Michael1.pdf) - slides
+- [zytrax LDAP for Rocket Scientists - LDAP Security](http://www.zytrax.com/books/ldap/ch15/)
 
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