In achieving these goals, a firewall protects computers from hostile intrusion that could compromise confidentiality or initiate lost or corrupted data. ... Lars Klander provides a simplistic explanation of the different types of firewalls when he writes: "The network-level firewall is typically a screening router or special computer that examines packet addresses to determine whether to pass the packet to the local network or to block the packet from entering the network" (85). ... Klander also advises that an application-level firewall is usually a host computer running proxy-server softw...

• Word Count: 834
• Approx Pages: 3
• Has Bibliography
• Grade Level: Undergraduate