Devops

OpenVPN + Google Authenticator + SELinux on CentOS 7

Just a quick post to share this with anyone else that needs it. I spent hours using Google and reading posts from random people on the net, including bug comments from Dan Walsh on a never solved Fedora bug specifically related to this. The conclusion I came to was that hardly anyone uses SELinux and the ones that do just hack around the problem rather than solving it. In this particular case, the fault is really with the terrible implementation of Google Authenticator, which I found out during the course of this by reading through the source code.

Setting Up a Macbook for an OpSec Focused Developer - Part 2

Introduction My apologies for the delay in posting part 2. I encountered a few chicken-and-egg problems in that I wanted to write this update from my new Macbook but needed complete the remainder of the setup in order to have a comfortable and secure environment to do so from. Without further ado, on to the meat of it. Organization I’m breaking this article up into several parts to both assist me in the process of writing it and to make it easier to digest.

Setting Up a Macbook for an OpSec Focused Developer - Part 1

Introduction That time has come again, and I have acquired a new Macbook Pro. In this case its primarily in preparation for my trip so that I can edit photos effectively on the go. It replaces my aged 2011 Macbook Air (which has served me well). It seems an opportune time then to write up my process for setting up a Macbook, and with a particular focus on security.

The Ops Approach to Linux Server Security

This post was originally a response to a question I received from a friend via email, with some additions. I’m not going to try to get very in-depth here, this is more of a high-level overview of what you should be doing to secure a server running Linux. This is mainly focused on a business environment where you have multiple users and multiple servers (and are hopefully using configuration management software).