CSI 120-74 Business Data Networks and Communications Karin Bean Assignment 8 November 28, 2004 Firewalls Why is a firewall valuable? Many Corporations are using computers that are connected to communication networks, such as intranets, extranets, and the Internet. Sensitive corporation data is transferred back and fourth between different sites and there is a big thread of electronic attacks. Because so many people have access to the data, a corporation has to protect its assets (data, software, etc.). Furthermore, …showed first 75 words of 666 total…

…showed last 75 words of 666 total…not protect everything Firewalls do not protect against viruses, there can still be threads that viruses attach to e-mail and could get into the system. Besides firewalls, there has to be other security measures such as virus protection, user passwords, limited access to data, and encryption and authentication of data, as well as access control. References: www.prenhall.com www.encarta.com http://www.techdirectory.ws Raymond R. Panko, Business Data Networks and Telecommunications, Ch 9