A firewall
is a specialized device that selectively filters or blocks traffic between networks
A more sophisticated security technique is necessary to perform user authentication
Remote control systems enable a user to connect to a host system on a network from a distance and use that system’s resources
Encryption is the use of an algorithm to scramble data into a format that can be read only by reversing the algorithm
Virtual private
networks (VPNs) are private networks that use public channels to connect clients and servers