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Ubuntu Tutorials

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"I’ve spent the bulk of my afternoon trying to setup some type of parental controls on an Ubuntu machine. My brother has been using Ubuntu for some time now and good ‘ol Dad wants to make sure that he doesn’t run into the wrong neighborhood online. I’ve managed to figure things out so I thought I’d put together the steps that I used.

Parental Controls with dansguardian, tinyproxy & firehol : Ubuntu (6.06.1 / 6.10)


I have recently posted about Seveas’ Repository, which includes a comprehensive package for multimedia within gnome or kde. I also wanted to outline how you can manually install most of the main multimedia codecs for your ubuntu machine. (I personally still prefer the manual method as there are a few aspects of Seveas’ multimedia package that I don’t like.)

How to install multimedia codecs : Ubuntu (6.06.1 / 6.10)


Recently I was asked how to install the Adobe Reader on Ubuntu. Personally I have always used the included Evince reader, as it has always served my purposed. However, as I found out, there are reasons why you may want to use the Adobe Reader. So, below are instructions for installing Adobe Reader (PDF) with Firefox Plugin:

How to install Adobe Reader (PDF) for Firefox : Ubuntu (6.06.1 / 6.10)


Or access all from the Homepage.


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Canonical released today new kernel updates for all of its supported Ubuntu Linux releases, patching recently discovered security vulnerabilities, including the infamous BlueBorne that exposes billions of Bluetooth devices. The BlueBorne vulnerability (CVE-2017-1000251) appears to affect all supported Ubuntu versions, including Ubuntu 17.04 (Zesty Zapus), Ubuntu 16.04 LTS (Xenial Xerus) up to 16.04.3, Ubuntu 14.04 LTS (Trusty Tahr) up to 14.04.5, and Ubuntu 12.04 LTS (Precise Pangolin) up to 12.04.5. Read more

Security: Updates, 2017 Linux Security Summit, Software Updates for Embedded Linux and More

  • Security updates for Tuesday
  • The 2017 Linux Security Summit
    The past Thursday and Friday was the 2017 Linux Security Summit, and once again I think it was a great success. A round of thanks to James Morris for leading the effort, the program committee for selecting a solid set of talks (we saw a big increase in submissions this year), the presenters, the attendees, the Linux Foundation, and our sponsor - thank you all! Unfortunately we don't have recordings of the talks, but I've included my notes on each of the presentations below. I've also included links to the slides, but not all of the slides were available at the time of writing; check the LSS 2017 slide archive for updates.
  • Key Considerations for Software Updates for Embedded Linux and IoT
    The Mirai botnet attack that enslaved poorly secured connected embedded devices is yet another tangible example of the importance of security before bringing your embedded devices online. A new strain of Mirai has caused network outages to about a million Deutsche Telekom customers due to poorly secured routers. Many of these embedded devices run a variant of embedded Linux; typically, the distribution size is around 16MB today. Unfortunately, the Linux kernel, although very widely used, is far from immune to critical security vulnerabilities as well. In fact, in a presentation at Linux Security Summit 2016, Kees Cook highlighted two examples of critical security vulnerabilities in the Linux kernel: one being present in kernel versions from 2.6.1 all the way to 3.15, the other from 3.4 to 3.14. He also showed that a myriad of high severity vulnerabilities are continuously being found and addressed—more than 30 in his data set.
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