Openbsd

Running OpenBSD on Xen

       515 words, 3 minutes

Here’s the configuration I use to run OpenBSD 4.9-beta on my NetBSD/xen server (NetBSD 5 with Xen 3.3.1). Since OpenBSD doesn’t provide a Xen-aware kernel, I run it using HVM.

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Back to the sea ; the Open Source Groupware (SOGo), episode XI

       1099 words, 6 minutes

Quoting SOGo: Open Source Groupware homepage: SOGo is groupware server with a focus on scalability and open standards. SOGo provides a rich AJAX-based Web interface and supports multiple native clients. It is a set of access tools to your Mail, Calendar and Address book. It provides Webmail, a CalDAV and a CardDAV services. It also enables integration with native clients, like Mozilla Thunderbird, Microsoft Outlook and Apple Mail. The difference with M$ Exchange is that it is Open Source software. The difference with Zafara or Zimbra is that it doesn’t come with its own backend ; it sits on top of some already running SMTP and IMAP servers.

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Backup LDAP entries with ldapsearch

       84 words, 1 minutes

I have a LDAP instance running the OpenBSD’s ldapd. I installed the openldap-client package so that I get ldapsearch, but there doesn’t seem to be any slapcat-like tool ; which may be used to backup the LDAP content in LDIF format. Here’s a trick to dump the ldapd content using ldapsearch:

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Back to the sea ; the mail server (SMTP, IMAP, GreyList, RBL...), episode X

       1414 words, 7 minutes

Like I did with NetBSD, this is how to build an almost complete Mail Server with OpenBSD. We’re gonna use a Dovecot IMAP server and a Postfix SMTP server. Postfix will use Dovecot as a SASL service. Both will use LDAP to identify valid users and e-mail aliases. Mail sanitization will be provided by RBL, from Postfix, and by the spamd shipped with OpenBSD.

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Back to the sea ; the virtual private network (VPN), episode IX

       519 words, 3 minutes

I use VPN to remotely connect to my home-LAN when I’m away. I’ve tried may kinds of VPN ; from IPsec (point-to-point) to SSL through L2TP. I found that the easiest one to implement, when using various OS client, was VPN/SSL. And the easiest software to be used by any OS, or at least any I use, was OpenVPN. From Windows to OSX through NetBSD, there’s an available binary. So let’s create the server on OpenBSD.

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