On 14h July (though it was already the 15th here), some of my monitoring jails started throwing errors. Not all of them, though. On the same host, an Uptime Kuma instance was showing a ton of servers down, while LibreNMS wasn't displaying any issues. After investigating, I discovered why. The jail running LibreNMS was using local_unbound (integrated into FreeBSD), while the other, perhaps for speed, was using Cloudflare's DNS.

DNS is like email, the Fediverse, and other similar services: they work better and make us freer when they're decentralized.

Let's go back to decentralizing the internet. Its very existence, as we've known it, depends on it.

#BeFree#Decentralization#SysAdmin#IT#Technology#Internet#Networking

Cloudflare 1.1.1.1 Incident on July 14, 2025

https://blog.cloudflare.com/cloudflare-1-1-1-1-incident-on-july-14-2025/

#Cloudflare#Networking#SysAdmin

Okay dumb question:

We all know that the speed of your internet is as fast as the slowest component, right ?

So what is the point in having fiber to the home if the router goes only up to 2.5 GB/s on the outputs ?

Like, my super speed is wasted by the router at this point. Or am I getting something wrong ?

#Networking#ComputerScience

Simulating Network Latency in Kubernetes with Traffic Control (tc)

https://ruivieira.dev/blog/2025_07_11.html

#kubernetes #networking#DevOps

🐡 Building a Simple Router with OpenBSD • btxx.org

https://btxx.org/posts/openbsd-router/

#openbsd #bsd #networking

Yes, The Book of PF, 4th Edition Is Coming Soon https://nxdomain.no/~peter/yes_the_book_of_pf_4th_ed_is_coming.html

Long rumored and eagerly anticipated by some, the fourth edition of The Book of PF is now available for preorder https://nostarch.com/book-of-pf-4th-edition #openbsd #pf #packetfilter #freebsd #networking #security #tcpip #ipv6 #ipv4#bookofpf

Long rumored, eagerly anticipated by some, you can now PREORDER "The Book of PF, 4th edition" https://nostarch.com/book-of-pf-4th-edition for the most up to date guide to the OpenBSD and FreeBSD networking toolset #openbsd #freebsd #networking #pf #packetfilter #firewall #preorder #security

New blog post: A detailed look at the new network setup

https://blog.transitory.social/posts/2025-07-02-network-rebuild-project/

Almost everything was rebuilt, and multiple layers of complexity were eliminated
#Homelab #Networking #Kubernetes #Mikrotik

Confirmed: There will be a full day PF tutorial "Network Management with the OpenBSD Packet Filter Toolset" at #eurobsdcon 2025 in #zagreb.

Details to emerge via https://2025.eurobsdcon.org/, and expect more goodies to be announced!

#openbsd #freebsd #pf #packetfilter #networking #security #freesoftware #libresoftware #bsd

Any router is a firewall if you configure it badly enough.

#networking

When adopting a new 100GbE switch, it’s important to follow gradual introduction procedures to keep your existing cats from becoming stressed and developing RDMA aggression.

#cats #catsofmastodon #networking #homelab

Working on a meshcore testbed.

I want to have several radios on the roof so I can develop in production

#meshcore #lora #meshtastic #radio #networking #seeedstudio

Wrote a little parser for meshcore packets tonight. It's still messy and a lot more to implement. But, it reads the container format so I'm happy for now.

I have meshcore packets flowing from multiple repeaters(on different frequencies) talking on wifi using udp broadcasts.

The repeaters automatically discover each other on the network and now I'm able to watch their chatter with a quick nodejs server.

#lora #meshcore #networking #radio #nodejs #container #incus