GRE tunnels are useful in many ways. This blog post shows how to set up
multicast routing with pimd over a
GRE tunnel. To achieve this we will also set up OSPF over GRE with
Quagga, because PIM, unlike DVMRP (mrouted),
require unicast routing rules to be established.
In this post we are using the home WiFi network, 192.168.1.0/24, to hook
up the GRE tunnel. It is just as easy to extend this to a big corporate
Intranet with more routers between R1 and R2. As long as that IT
department takes care of the unicast routing between R1 and R2 so
that the GRE tunnel can be established.
I still get asked this, from time to time. Maybe it’s because I only
use event loops, maybe it’s because I’ve written libuEv, or maybe
people still don’t understand:
Reminder to self:
echo "https://ftp.eu.openbsd.org/pub/OpenBSD/" >/etc/installurl pkg_add git autoconf automake libtool Select the latest versions, then add the following to ~/.profile:
AUTOCONF_VERSION=2.69 AUTOMAKE_VERSION=1.15 export AUTOCONF_VERSION AUTOMAKE_VERSION With your selected versions, of course.
This is a HTTPS proxy HowTo for Merecat httpd using pound and OpenSSL.
Pound is a reverse proxy, load balancer, and HTTPS front-end for Web servers. It is available in Debian/Ubuntu and is very simple to set up:
First install the package, including OpenSSL, or LibreSSL:
sudo apt install pound openssl Use OpenSSL to create a self-signed certificate:
mkdir ~/certs cd ~/certs openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.
Having worked with Linux for the last 20 years, and embedded for more
than ten of them, I’ve become quite a fan of virtualization in general
and Qemu in particular.
Qemu is a fantastic little tool, created by the Open Source superhero
Fabrice Bellard.
It can be used to verify an embedded system without having to deal with
the problems of actual HW until you really have to. Don’t get me wrong,
HW excites me like any other nerd, but if the HW is new and shaky it can
be quite a pain to develop higher level functions.
My holy grail is to have a 100% complete and accurate virtualization
target per architecture to test my various software projects on. That’s
why I created TroglOS.
The last game I ever played was Castle Wolfenstein 3D, released in
1992 for MS-DOS, made by the now legendary id Software. OK, admittedly
I’ve played other games since then, but I’ve never again been so manic
about a game since Wolfenstein.
This post is about how to build, install and set up Wolfenstein 3D on a
Raspberry Pi running RetroPie … on a Picade :-)
