What is "Windows Operating System" in "Firewall Events", in Firewall?

[5Lqep]

Firewall as 5 folders

• System
  Windows Updater Applications
  Windows System Applications
  Metro
  Comodo Internet Security

Which folder is Firewall Events referring to in Firewall when saying Windows Operating System

[C.O.M.O.D.O RT]

Firewall as 5 folders

• System
  Windows Updater Applications
  Windows System Applications
  Metro
  Comodo Internet Security

Hi 5Lqep,

Thank you for reporting, these are the predefined firewall application rules which manages network access rights.
For more information, refer the below link:
https://help.comodo.com/topic-72-1-766-9173-Application-Rules.html?af=7639

Thanks
C.O.M.O.D.O RT