This repo is essentially just a bunch of Linux sysadmin / defense writeups for CCDC. I essentially just searched the internet for a lot of information that I thought would be useufl, evaluated that knowledge, and typed it up into a lot of different writeups. While there is a lot of practical knowledge in here, some of it might be a bit impractical.
When I initially wrote these, I only planned to have it be for myself / my team, so I was a bit unorganized. You will probably find some duplicate information in these files. However since I figured that I have essentially have several binders worth of writeups, that it might be good to open source them.
I have broken down my writeups into four seperate categroies:
+ Services: Information related to installing / configuring / securing services like http, dns, smtp
+ Distros: Just distro specific config information
+ Injects: Routine tasks that we could expect to do
+ misc: Info that doesn't fit into the other categories, but still is important, things like setting static ARP entries, effectively using Tripwrie, etc.
By far the most info is in the Services section, which also does hold a lot of distro specific info.
Also I feel like it might be relevant if anyone who is playing in CCDC, if you want some info related to what you can expect to see, I would recommend checking out this repo: https://github.com/mubix/howtowinccdc