Defining Network Infrastructures and Network Security

7 Articles

Understanding Security Devices and Zones

Last Updated On : Monday, June 25, 2018Understanding Security Devices and Zones This lesson Understanding Security Devices and Zones covers Security devices such as firewalls are the main defense for a company’s networks, whether they are LANs, WANs, intranets, or extranets. Perimeter security zones such as demilitarized zones (DMZs) help keep certain information open to […]

Defining Firewalls and Other Perimeter Security Devices

Last Updated On : Saturday, May 23, 2015Firewalls are used to protect a network from malicious attack and unwanted intrusion. They are the most commonly used type of security device in an organization’s perimeter. Firewalls are primarily used to protect one network from another. They are often the first line of defense in network security. […]

Defining Intranets and Extranets

Last Updated On : Saturday, May 23, 2015Intranets and extranets are used by organizations to share data with select individuals. Whereas an intranet is used by an organization to share data with its employees, an extranet is used to share data with sister companies or other partnered organizations. An intranet is a private computer network […]