The original PIM-SM daemon

- 2 mins read
Protocol Independent Multicast, PIM, allows existing networks to route IP multicast, regardless of what unicast routing protocol is in use. It is designed to use existing routing tables to make its multicast routing decisions. PIM-SM is suitable for sparsely located multicast subscribers, for dense mode operation mrouted is recommended, and for static multicast routing smcroute may be used. pimd is a lightweight standalone PIM-SM/SSM v2 multicast routing daemon. It is the original USC (netweb/catarina.

Multicast HowTo

- 13 mins read
This HowTo attempts to give some insight into the basics of setting up multicast routing. Both static multicast routing, with SMCRoute, and dynamic multicast routing, with mrouted and pimd. For some use-cases, in particular link-local multicast, it may not be possible to use multicast routing, then I recommend trying out: Bridging networks, see bridge(8) or Linux bridge - how it works igmproxy, mcproxy, or OpenVPN in Layer-2, bridged mode Make sure to check out the FAQ for the most common problems.

FLOSS Progress

- 3 mins read

This post is an update of what’s happened since last I posted about my many pet projects. As usual nothing fancy. If you want to know more I suggest you find one on GitHub you’re interested in. File an issue, or better yet, post a pull request to scratch that itch you have deep down: 👉 https://github.com/troglobit

Odd Progress

- 2 mins read

A lot has happened since my last post; I had my bike stolen, stumbled upon the guys who’d stolen it, got mugged by same guys, decided I’d had enough and then bought a house and moved to another city. That’s the long and short of it.

I’m OK, sort of.

Dark Themes Ahead

- 1 min read

Reminder to self: How to fix Firefox about:config when using a Dark Theme in Gnome or Awesome.

I use System76 amazing Gtk+ theme from Pop!_OS. It’s quite simple to set up on top of Ubuntu and use in Awesome:

sudo add-apt-repository ppa:system76/pop
sudo apt update
sudo apt install pop-theme

I then use gnome-tweaks to select the Pop-dark-slim theme. Now, the problem is that certain text box inputs in Firefox is either completely dark or white and the text cannot be seen until you mark it. This isn’t specific to the Pop!_OS theme, Adwaita-dark is exactly as bad.

HowTo play with SNMP

- 2 mins read
This mini HowTo describes how to use the SNMP client tools to retrieve human readable information from devices running an SNMP daemon. In the examples below mini-snmpd is used as the daemon and as client both the command line net-snmp tool and the snmpB GUI are used. Personally I use both Ubuntu and Debian, so the tools I use to download the clients will reflect that. See your respective UNIX distro’s help pages for how to install these client tools in your operating system.

N E M E S I S

- 2 mins read

Summer is almost upon us. The weather in Sweden has been amazing the last couple of weeks, sunny and warm. This has of course not prevented me from pursuing my favorite indoor activity; coding! This time around I’ve spent some time to resurrect the packet injection tool Nemesis.