I wrote this HOWTO, using LDAP on Synology so I could try out the Synology Directory Server. This is how I managed to get Linux machines to authenticate against it. At the time of writing, Synology was on DSM 6.2-23739 Update 2. I will be using Ubuntu 18.04 as the Linux clients
The Synology documentation for Directory Server is appalling only stating the blindingly obvious. That is all assuming the page has been updated, most having missing options or features.
This post will run through Installing phpLDAPAdmin on Ubuntu 16.04. You will need a server or desktop install that has a working LDAP server on it.
This HOWTO also works on a Raspberry PI 3 running the Ubuntu MATE image!
This post will run through Installing LDAP on Ubuntu 18.04. Allowing you to authenticate users via LDAP. As well as setting up thier Linux groups. You will need a server or desktop install to begin with. Lightweight Directory Access Protocol (LDAP) is a network protocol for accessing and manipulating information stored in a directory.
This HOWTO also works on a Raspberry PI 3 running the Ubuntu MATE image!