TODO

Todo:
  Put the subroutines in an order that actually makes sense
  Cleanup code and add more comments
  Automatically choose a device to sniff on during startup
  Write pcap dumps to a file
  Read pcap dumps from files
  Arguments for commands
  Network replay
  ARP poisoning
  Use of Readline
   Navigate history
   Arrow keys
  Identify DNS requests

  Stats:
    Track what DNS servers hosts use
    Track hostnames a host associates with an IP
    Give statistics on which hosts communicate with one another
      Specifically, what ports they talk to each other on
    Detect port knocking
    Inspect packet data for tunnelling