Jul 29

Enabling BBR Congestion-Based Congestion Control on kernel-xen

With the release of kernel-xen version 4.9.40, I have enabled CONFIG_TCP_CONG_BBR. This adds support for using BBR to improve the throughput from your servers (mostly web servers) to your clients.

If you run my kernel-xen package on your Xen guests, you can also take advantage of this new feature.

To enable, ensure you are running kernel-xen version 4.9.40 or above, then create a file called /etc/sysctl.d/enable-bbr.conf containing:

net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr

You can activate this by typing: $ sysctl -p

The changes will automatically apply at the next system boot.

To read more about BBR and why it makes such a difference, head on over to acmqueue for a far more in-depth analysis than I could provide.

Jul 12

Turnbull handballs encryption problem to tech companies

In a speech in London overnight, Turnbull said companies should not be able to build end-to-end encryption tools that meant nobody – including courts and law enforcement – could access the content of communications.

If you’re in the tech industry, and you know your local Liberal party member, point them to this and tell them to go fuck themselves. Regards, The Internet.

If you don’t know who your local member is, search here:
http://www.aph.gov.au/Senators_and_Members/Members

Jun 21

Talkback on the NBN in 2017

Recently on The Conversation Hour with Jon Faine, they discussed the NBN, its progress, and if its living up to what was promised.

53 minutes of audio included below for your listening pleasure.

Mar 19

Staying safe online – is it even possible?

So every once in a while, you come across something in IT Security that just makes you want to cry.

Usually, these are chained exploits that when executed properly have devastating effects.

Take the latest Pwn2Own competition. One of the successful hacks there was epic. And scary.

In a nutshell, an ‘Edge’ browser exploit to get into the Windows 10 VMWare guest, then a bug in the VMWare guest to own the VMWare host. Yes, hacking the VMWare host – from a web page.

That’s scary.

Mar 13

Why working in aviation was so cool

The company I used to work for took part in the Avalon International Airshow lately – showing off their Learjet 45. Less words, more video 🙂

Onboard Camera:

Outside view of the high-speed pass:

The landing back at Avalon:

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