1. http://support.code42.com/CrashPlan/Latest/Configuring/Configuring_A_Headless_Client
  2. http://www.code42.com/crashplan/thankyou/?os=linux
  3. Port 443 TCP is required for communicate to our server. Port 4243 is the service port and is required for the engine to connect to the UI, and 4242 is used for peer-to-peer backups.