Firewalls Why is a firewall valuable?

CSI 120-74 Business Data Networks and Communications Karin Bean Assignment 8 November 28, 2004 Firewalls Why is a firewall valuable? Many Corporations atomic number 18 using computers that are connected to communication networks, such as intranets, extranets, and the Internet. shabu commode data is transferred back and fourth among unlike sites and thither is a big medal of electronic attacks. Because so many another(prenominal) people have access to the data, a corporation has to treasure its assets (data, software, etc.). Furthermore, a firewall helps to control reading flow amongst sites and therefore assists in preventing congestions on the network. Using a firewall is an all- primal(a) part of a companys run a risk management strategy. There should be a maximum thread protection with minimum risk, steep performance, and ease of administration. What does it Do         A firewall may consist of several pieces of equipment and may include a rou ter, a gateway server, and an authentication server. Firewalls manage incoming and surmount traffic and filter, redirect, repackage, and/or discard packets. Packets may be filtered ground on their source and destination IP address, source and destination TCP port numbers, setting of bits in the TCP header, and so on. By using firewall boxes and software placed between the networked computers, corporations are able to protect their assets.

The firewall examines, filters, and reports on all information transeunt through the network to ensure its appropriateness. Firewalls are excessively heavy since they can provide a single `` realise point where security department and audit can be imposed. Unlike in a situation where a co! mputer system is universe attacked by someone dialing in with a modem, the firewall can effect as an effective ``phone tap and tracing tool. Firewalls provide an important log and auditing function; often they provide summaries to the administrator near what kinds and arrive of traffic passed through it... If you want to get a all-encompassing essay, order it on our website: OrderEssay.net

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