I recently had a server go offline, taking with it the DNS for my main email domain. I had long suspected this would be a major potential problem in the setup. When the server went down the DNS settings where not backed up by the hosting company so all of a sudden people […]
Category Archives: Computing
Flickering Images
I have been asked numerous times in the past how I create this effect in some forum signatures so now I am releasing the code so you can see. It could equally be used as a background image in CSS (like the photo of the excavator above) so you could have a circulating series […]
Optus Cable + Port 25 (SMTP)
I have been setting up a mail server of which smtp is an integral part. I could access it through my old net connection at home and I can through work but I am currently staying somewhere with Optus Cable. They block port 25! I called their tech support to confirm, he […]
Mod Security
A great little addition to all Apache server installations.
Install it via:
apt-get install libapache2-mod-security
Then create a symbolic link so that the mod is enabled:
ln -s /etc/apache2/mods-available/mod-security.load mod-security.load
Setup the config for the module in /etc/apache2/httpd.conf
Mine looks like the file attached at the end of the article.
Then kick over Apache2:
/etc/init.d/apache2 restart
You can now run the tests to see […]

