ldap

LDAP replication between Synology DSM and OpenBSD

    

I want my OpenBSD 6.4 services to authenticate users from a remote LDAP server ; namely a Synology Directory Server (DSM 6.2.x). It turns out that this a standard OpenLDAP 2.4.x configured to accept replication refreshAndPersist mode. So let’s configure a Primary / Secondary Replication system between Synology and OpenBSD.

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Authenticate OpenBSD users on QNAP LDAP

    

I wanted to share users authentication and permissions between the QNAP TS-453mini and my OpenBSD servers. An option is to enable and manage LDAP server on the QNAP and configure OpenBSD 6.0 to authenticate the users on the remote LDAP service.

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OpenSMTPD, Dovecot and ldapd on OpenBSD 5.7

    

Looking to replace my old Postfix/Dovecot configuration with more native OpenBSD stuff, I finally ended with a configuration than seems suitable to me. I’ll be hosting virtual users and mail aliases in ldapd(8), smtpd(8) will deal with email receiving/sending and dovecot(1) will be in charge of email delivery using LMTP and email reading using IMAP. Of course, spamd(8) will do a bit of work in front of OpenSMTPD. All of those will run on OpenBSD 5.7.

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Quick overview on Synology Directory Server

    

Quoting the Package Center description: “Directory Server provides LDAP service with centralized access control (…)”. Let’s have a (quick) look at what Synology’s LDAP service provides.

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Monitoring OpenBSD’s LDAP daemon

    

OpenBSD ships with an LDAP daemon since 4.8. I have an all-in-one server from which the LDAP service has to be shipped out. I’m going to replace that OpenLDAP daemon with the LDAP daemon from OpenBSD 5.1. I already wrote about how to enable LDAP on OpenBSD 4.8 . Those will be updated notes for OpenBSD 5.1 and additional directions to allow monitoring the LDAP activity using SNMP and Xymon server.

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