Network security is the protection of the underlying networkinginfrastructur （ ） access, misuse, or theft. It involves creating a secureinfrastructure for device and applications to work in a （ ） manner. Network security combines multiple defenses at the edge and in thenetwork. Each network security layer implements（ ）controls.Authorized users gain access to network resources. A（ ） is a networdevice that monitors incoming and outgoing network traffic and decideswhetherblock specific trffic based on a defined set of security rules. Avirtual （ ）encrypts the connection from an endpoint to a network,often over the internet.remote-aceess VPN uses IPsee or Seeure Soekets Layer to aufhenticate thebetween device and network.