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Are outbound firewalls worthwhile?

I was recently setting up a server on Microsoft's Azure platform from work and by default Azure pick I high port number1 and NAT it to port 3389 for RDP. I must have spent a good hour trying to work out why I couldn't connect to the server when …

My IP Tables script example

Below is an example of the IP Tables script I use on many of my servers. The names and IP addresses have been changed to reserved addresses and obviously it needs to be tweaked each time for relevent rules.


# This script is symlinked to /etc/network/if-pre-up.d …

How to tunnel data over DNS

A while ago I wrote a post on tunneling data over DNS that was a technical explanation of what's going on. This post is a tutorial on how to setup a DNS tunnel with iodine.

I'm using DNS Made Easy as my main DNS provider, Debian on an EC2 for …

Why I can't patch the Juniper Backdoor

It's Thursday the 14th of January 2016, and it's now 25 days after I first heard about the Juniper backdoor (I heard about it on Monday the 21st of December 2015) and I still haven't patched it yet. We don't use the VPN and have never had SSH open to …

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