Open source slides (licensed under the CC BY-SA 4.0 License) for my Linux Knowledge Sharing session which explores Linux History and some basic commands.
Leap Seconds. A new one is being injected at the end of 2016. Why should you care? Is your infrastructure and software prepared for the issues it brings with it?
Have you ever wondered why your nameserver does not allow you to put a CNAME Record at the zone apex?
What is HSTS? How does it protect your web host from SSL Stripping Man In The Middle attacks? How can you implement it?
DNSSEC is a suite of specifications for securing DNS. How do you enable your Windows DNS Server to Validate DNSSEC?