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Post #362 1.47K
Let's install OpenBSD/riscv64 on QEMU

I wanted to get in on the OpenBSD/riscv64 bandwagon, but I don't have the money to spend on fancy new hardware. Fortunately, QEMU has RISC-V support. Unfortunately, I could not find any instructions to install OpenBSD on it. We'll just have to figure it out ourselves...

https://briancallahan.net/blog/20220418.html

#install #riscv64 #install
  • 👍 2
  • 🔥 2
Post #359
Channel photo updated
Post #358 1.28K
How to talk to a local IPMI under OpenBSD.

Much like Linux, modern versions of OpenBSD are theoretically able to talk to a suitable local IPMI using the standard ipmi(4) kernel driver. This is imprecise although widely understood terminology; in more precise terms, OpenBSD can talk to a machine's BMC (Baseboard Management Controller) that implements the IPMI specification using one of a number of standard interfaces, as covered in the "System Interfaces" section of ipmi(4). However, OpenBSD throws us a curve ball in that the ipmi(4) driver is normally present in the default OpenBSD kernel but not enabled...

https://utcc.utoronto.ca/~cks/space/blog/unix/OpenBSDLocalIPMI

#ipmi #hardware
Post #357 1.21K
OpenBSD Gaming Updates Q2 2022.

It's been a little quieter on the subreddit for a while, but that doesn't mean that nothing is happening in OpenBSD gaming! With the final touches being applied before the OpenBSD 7.1 release, this is as good a time as any to give a bit of an overview of recent developments and useful resources...

https://www.reddit.com/r/openbsd_gaming/comments/u5tdzy/openbsd_gaming_updates_q2_2022/

#desktop #games #system
Post #352 1.5K
Heap Overflow in OpenBSD's slaacd via Router Advertisement

In this blog post we analyze a heap overflow vulnerability we discovered in the IPv6 stack of OpenBSD, more specifically in its slaacd daemon. This issue, whose root cause can be found in the mishandling of Router Advertisement messages containing a DNSSL option with a malformed domain label, was patched by OpenBSD on March 21, 2022. A proof-of-concept to reproduce the vulnerability is provided.

https://blog.quarkslab.com/heap-overflow-in-openbsds-slaacd-via-router-advertisement.html

#security #network #slaacd
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Post #348 1.6K
Native IPv6 with OpenBSD and Aussie Broadband

We are coming on two decades since IPv6 became a recognised standard and generally available but it is still not being widely adopted by people and organisations that have easy access to IPv4 address space. Even if you have a native IPv4 address, it will typically be in the form of some CG-NAT or other NAT on your customer premises equipment (CPE)...

https://www.tubsta.com/2022/03/native-ipv6-with-openbsd-and-aussie-broadband/

#network #ipv6
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Post #346 1.74K
Debugging an ioctl Problem on OpenBSD.

I was trying to use a V4L2 Ruby module on my OpenBSD laptop but ran into a problem where sending the V4L2 ioctls from this module would fail, while other V4L2 programs on OpenBSD worked fine...

https://jcs.org/2022/02/16/ioctl

#ruby #debug #ioctl
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Post #345 1.79K
A reckless guide to OpenBSD.

Welcome to a new weekly series of articles for intermediate to advanced level users of OpenBSD, focusing on aspects of using and customising the system that are not broadly covered or encouraged by the project's own official documentation, (hence the term ‘reckless guide’)...

https://www.exoticsilicon.com/jay/reckless_guide_to_openbsd

#system
  • 👍 16
Post #344 1.53K
The complete idiot's guide to OpenBSD on the Pinebook Pro.

Today I will show you how I installed the latest snapshot of OpenBSD on my Pinebook Pro with plenty of detail so that you can do it, too. I will include instructions for setting up full disk encryption, and conclude with a summary of my experience running OpenBSD on this device...

https://tomscii.sig7.se/2022/02/Guide-to-OpenBSD-on-the-PinebookPro

#install #system #hardware
  • 👍 7
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