Now a new, free alternative to Spamhaus has arrived: the Barracuda Reputation Block List (BRBL), provided by well-known, open source-based Barracuda Networks. And Barracuda CEO Dean Drako says the company has no plans to charge for the service in the future. He says that BRBL (pronounced “barbell”) “does cost us a little bit of money to run, but we think that the goodwill, the reputation and the understanding that Barracuda is providing the service will do us well in the long run.”
Please do not attempt to upgrade your raspberry pi to a newer version of the distribution (for instance, from 15.04 to 15.10) as the underlying kernel is not designed to do this. This process will take a very long time to complete while potentially filling up your SD card to a point where there is no more free space.
It is safer to back up all your data you wish to keep and re-flash the card with the new image. Attempting to upgrade may corrupt the SD card, prevent your installation from booting, or cause severe glitches.
You can, however, install regular updates via the Software Updater utility for your installed software.
The same kernel provided by the Raspberry Pi foundation is used in this edition of Ubuntu MATE. As this kernel is delivered like a “firmware” blob, updates are not distributed via the Software Updater or apt-get.
Instead, to update the kernel, open a terminal and run:
Currently, Hardware accelerated applications are not supported unlike Raspbian. Applicationsthat depend on OpenGL ES libraries or require the GPU will fail to start.
For playing videos, the application omxplayer will be able to do this and is pre-installed. If you are looking to play MPEG-2 or VC-1 video files then you will need MPEG-2 and/or VC-1 licenses from the Raspberry Pi Store.
For users who are looking to create their own headless “server” using Ubuntu MATE, there is a utility for toggling the graphical environment.
Here is what I have done to migrate my ownCloud installation to Nextcloud. My installation is configured with the data directory outside of the webservers document root. To my surprise, the process was simple and painless.
First, I have updated my ownCloud installation to version 9.0.2, which I think is the newest BETA version, via the updater app.
Then I have made a full backup of the MySQL database via mysqldump and a full backup of the domains directory structure with tar (because of its size via sshfs to another server with sufficient space). There are howtos which are recommending exporting calendars and contacts prior to the migration, but I did not see what it should be good for after a full backup (and I do have filesystem snapshots on top of that).
The next step was to delete everything in the ownCloud installation directory but /config, /data (and the /data direcory outside the document root of course) and /themes.
After that I have extracted the Nextcloud 9.0.52 release ZIP just over what was left of my installation and then I have changed owner and group of the extracted files to the run user and group of the domain.
Now it’s been time to point my browser to the GUI of the new Nextcloud installation and just walk through the steps.
To finalize the migration I had to reactivate the calendar and contacts app.
To tighten the security of my Nextcloud installation a little, I have configured fail2ban to react on failed login attempts.
First you have to tell Nextcloud that you want to write a log file in /path/to/Nextcloud/config/config.php
The next thing to do is to configure a filter definition /etc/fail2ban/filter.d/nextcloud.conf to tell fail2ban how to find IP-Adresses to ban:
Diese Domain muss ziemlich viel leiden weil hier alles mögliche abgeladen, ausprobiert und getestet wird.
Ausserdem haben hier ein paar meiner Freunde und Freundinnen sowie Mitglieder meiner Familie E-Mail-Accounts.
Was hier öffentlich gemacht wird ist ausschließlich die Meinung von Heiko Mischer. Nur weil jemand eine E-Mailadresse auf dieser Domain hat muss er oder sie nicht mit dem übereinstimmen was Heiko Mischer tut, denkt, meint, sagt oder schreibt.