Integrated Spamassassin and Postfix MTA Setup on Ubuntu

The wiki entry on the Spamassassin wiki for the simple setup with Postfix is almost there. I recently setup my 12.04 Ubuntu server with Spamassassin with Postfix and everything is working well. I had to do a few more steps to get it working. Here is what I did.
1. Create the spamfilter.sh script detailed on [...]

Repairing a badly damaged package system in Ubuntu

Recently, I did something really stupid and damaged my whole dpkg system. It was pretty bad. I did an “apt-get purge” with a pattern and wildcard and thought it was only going to remove everything around a specific package. It didn’t. It did much much more. Not helping the whole situation was the interrupt I [...]

ffmpeg compile with h.264 on Raring Ringtail (Ubuntu 13.04)

The temp space is your friend on this. I am root user throughout this. You can sudo every command, but that gets old for me.

Get the latest source

Go into the clone source and configure with H.264 support

 
The make will take a while because of the H264 support.

make install will be a breeze.

And it’s just that [...]

The Mandiant Report on China Espionage Units

The Mandiant Report on the China-sponsored espionage units is fascinatinga and well worth a read.

 
They discuss spearphishing and the attack lifecycle.

Blocking China IP Address Blocks

After having a user email account compromised and our mailserver used to dish spam for a few hours, I am going ahead and starting to block China IP addresses outright that are attacking us. This doesn’t solve the issue, but I am kind of done with even negotiating and rejecting attack traffic at our servers now that originate [...]