Google and Microsoft dominate email, but it's still possible to run your own mail server provided you use modern protocols and maintain acceptable behaviors. This half-day tutorial will take you through configuring your own mail system, from a bare BSD operating system up through SPF, DKIM, and DMARC, and discuss the social rules needed to get your messages into Gmail and Outlook.
We'll...
Transport Layer Security is one of the least well-understood parts of system administration. This tutorial will take you into a deep dive into the management of TLS. We'll discuss:
- how TLS Works
- what TLS provides, and what it doesn't
- assessing TLS configurations
- the ACME protocol and Let's Encrypt
- OCSP and Certificate Revocation
- CAA, HSTS, and Certificate Transparency
*...
On OpenZFS, fsync() cannot fail - it will wait until the application’s changes are on disk before it returns. If there is a problem, such as a hardware failure, that causes the pool to suspend, then it will block until the pool returns. This could be seconds, hours, or never, depending on the nature on the failure.
Modern distributed systems can often cope with this type of failure by...
USB Debug Capability (DbC) is a standardized functionality in Host Controller Interface of USB 2.x and 3.x. It is a hardware-level circuitry available as a hidden serial communication channel that can work even with no operating system support and is supposed to be an out-of-band access endpoint for debugging. When a kernel panic occurs, we cannot get debugger access on laptops or...
Allan from Klara Systems shares a series of stories from supporting users deploying FreeBSD in the field across various industries. These stories come from the silent users of FreeBSD, those that the community often do not know or hear about. Be that because they happen in the quieter corners of industry, where it is not common to discuss the technical challenges you face or how you overcame...
It was a disaster, not of the natural kind, but one that was corporate. Big Corp had decided to reorganize and move my team to another division. Similar to a natural disaster, our team was now homeless and cut off from the essentials: a file server, "desktop" systems, and directory services. Our choices were to ship our fleet of systems halfway across the country to be managed for us or create...
Zelta: A Safe and Powerful Approach to ZFS Replication
In the storage management landscape dominated by overpriced and underperforming cloud-based systems, ZFS stands out as a top-notch enterprise backup and recovery framework—especially with FreeBSD’s longstanding first-class implementation. However, mastering ZFS requires expertise and understanding.
Drawing from my experience managing...
Join our panel of ZFS experts over lunch as they field questions from the audience about ZFS, new features, best practices, and old bugs.
If you deploy ZFS, or are considering doing so, you should join us.
