calum.org:~#


OpenWRT ad blocking

wget https://winhelp2002.mvps.org/hosts.txt -O /tmp/block.host /etc/init.d/d...

Posted on 2021-04-12 under

Reverse firewall

I wonder if it's worth on a server only allowing outbound traffic that's in r...

Posted on 2021-04-01 under

Sky Broadband blocking Signal Messenger pictures

My mother has switched from WhatsApp to Signal Messenger recently, and immedi...

no-install-recommends

Reduce the number of packages installed cat > /etc/apt/apt.conf.d/99_norecom...

Posted on 2021-03-01 under

The 2019 Cricket World Cup final

Cricket has a reputation as a game that takes days to play, and can still end...

In Our Time

What do Zeno's Paradoxes, Tutankhamun, The Illiad, Papal infalibility and gen...

Playing with software defined networking

If you want to get a basic OpenFlow SDN network set up, then these are the in...

Driving on the left

Driving on the left-hand side of the road isn't as uncommon as people might t...

Posted on 2020-07-13 under

Recommended hardware

Recently, I've had some extra spare time at weekends, and I've been playing a...

Missing the point of SPF

Some people don't understand the point of SPF or Sender Permitted From*. I...