NOTES
This episode of BSDNow is brought to you by Tarsnap and the BSDNow Patreon

Headlines

Implementing a system call for OpenBSD

Self-Hosted Email services on OpenBSD

The First 5 Minutes on a New FreeBSD Server

News Roundup

OLD COMPUTER RESCUE - X201

[CFT] sec(4) for Route Based IPSec VPNs

How to send syslog messages using command-line utilities

Keeping my email sorted (the hard way)

Tarsnap

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Feedback/Questions

• Albin - Links
• Douglas - Best practices
• Patrick - Ideas Feedback

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• Join us and other BSD Fans in our BSD Now Telegram channel

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NOTES

This episode of BSDNow is brought to you by Tarsnap and the BSDNow Patreon

Headlines

4 Months of BSD

Self Hosted Calendar and address Book

News Roundup

Ban scanners IPs from OpenSMTP logs

Self-hosted git page with stagit (featuring ed, the standard editor)

Bastille template example

Nginx: How to Restrict Access by Geographical Location on FreeBSD

Beastie Bits

Tarsnap

• This weeks episode of BSDNow was sponsored by our friends at Tarsnap, the only secure online backup you can trust your data to. Even paranoids need backups.

Feedback/Questions

• Chris - ARM
• Matthew - Groups

• Send questions, comments, show ideas/topics, or stories you want mentioned on the show to feedback@bsdnow.tv ***

NOTES
This episode of BSDNow is brought to you by Tarsnap and the BSDNow Patreon

Headlines

Of Sun Ray laptops, MIPS and getting root on them

OpenZFS for HPC Clusters

News Roundup

Self-Hosted Bookmarks using DAV and httpd on OpenBSD

Terraform + Proxmox + OpenBSD = <3

WOL Plex Server

Against Innovation

Tarsnap

• This weeks episode of BSDNow was sponsored by our friends at Tarsnap, the only secure online backup you can trust your data to. Even paranoids need backups.

• Send questions, comments, show ideas/topics, or stories you want mentioned on the show to feedback@bsdnow.tv

Headlines

Tales From a Core File - Lessons from the Unix stdio ABI: 40 Years Later

On the side, I’ve been wrapping up some improvements to the classic Unix stdio libraries in illumos. stdio contains the classic functions like fopen(), printf(), and the security nightmare gets(). While working on support for fmemopen() and friends I got to reacquaint myself with some of the joys of the stdio ABI and its history from 7th Edition Unix. With that in mind, let’s dive into this, history, and some mistakes not to repeat. While this is written from the perspective of the C programming language, aspects of it apply to many other languages.

Update Lenovo X260 BIOS with OpenBSD

My X260 only runs OpenBSD and has no CD driver. But I still need to upgrade its BIOS from time to time. And this is possible using the ISO BIOS image.

First off all, you need to download the “BIOS Update (Bootable CD)” from the Lenovo Support Website.

News Roundup

The problem of Unix iowait and multi-CPU machines

Various Unixes have had a 'iowait' statistic for a long time now (although I can't find a source for where it originated; it's not in 4.x BSD, so it may have come through System V and sar). The traditional and standard definition of iowait is that it's the amount of time the system was idle but had at least one process waiting on disk IO. Rather than count this time as 'idle' (as you would if you had a three-way division of CPU time between user, system, and idle), some Unixes evolved to count this as a new category, 'iowait'.

My Latest Self Hosted Hugo Workflow using FreeBSD Jails, Caddy, Restic and More

After hosting with Netlify for a few years, I decided to head back to self hosting. Theres a few reasons for that but the main reasoning was that I had more control over how things worked.

In this post, i’ll show you my workflow for deploying my Hugo generated site (www.jaredwolff.com). Instead of using what most people would go for, i’ll be doing all of this using a FreeBSD Jails based server. Plus i’ll show you some tricks i’ve learned over the years on bulk image resizing and more.

Let’s get to it.

Extending support for the NetBSD-7 branch

Typically, some time after releasing a new NetBSD major version (such as NetBSD 9.0), we will announce the end-of-life of the N-2 branch, in this case NetBSD-7.

We've decided to hold off on doing that to ensure our users don't feel rushed to perform a major version update on any remote machines, possibly needing to reach the machine if anything goes wrong.

Security fixes will still be made to the NetBSD-7 branch.

We hope you're all safe. Stay home.

Tale of two hypervisor bugs - Escaping from FreeBSD bhyve

VM escape has become a popular topic of discussion over the last few years. A good amount of research on this topic has been published for various hypervisors like VMware, QEMU, VirtualBox, Xen and Hyper-V. Bhyve is a hypervisor for FreeBSD supporting hardware-assisted virtualization. This paper details the exploitation of two bugs in bhyve - FreeBSD-SA-16:32.bhyve (VGA emulation heap overflow) and CVE-2018-17160 (Firmware Configuration device bss buffer overflow) and some generic techniques which could be used for exploiting other bhyve bugs. Further, the paper also discusses sandbox escapes using PCI device passthrough, and Control-Flow Integrity bypasses in HardenedBSD 12-CURRENT

Beastie Bits

• GhostBSD 20.02 Overview
• FuryBSD 12.1 Overview > Joe Maloney got in touch to say that the issues in the video and other ones found have since been fixed. Now that's community feedback in action, and an example of a developer who does his best to help the community. A great guy indeed.
• OS108-9.0 amd64 MATE released
• FreeBSD hacking: carp panics & test
• Inaugural FreeBSD Office Hours

Feedback/Questions

• Shody - systemd question
• Ben - GELI and GPT
• Stig - DIY NAS

• Send questions, comments, show ideas/topics, or stories you want mentioned on the show to feedback@bsdnow.tv