you need some basic computer skills. These skills go beyond the ability to create a Word document or cruise the Internet. You need to be able to use the command line in Windows, edit the registry, and set up your networking parameters.
Many of these basic skills can be acquired in a basic computer skills course like A+.
You need to understand the basics of networking, such as the following.
Public v Private IP
Routers and switches
Wireshark or Tcpdump
Wireshark is the most widely used sniffer/protocol analyzer, while tcpdump is a command line sniffer/protocol analyzer. Both can be extraordinarily useful in analyzing TCP/IP traffic and attacks.