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Write short notes on the following:

(a) Fire Wall It is the first line of defense for any computer system or network. All packets that enter the network should come though this point. A modern firewall is a system of applications and hardware working together. A sophisticated firewall performs a combination of packet filtering  network address translation and proxy services. FIrewalls…

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Explain the following with reference to “hardening” in WINDOWS 2000 O/S:

(1) Hardening the O/S and application code MIcrosoft peridically ditributes large updates to its OS in the form of service packs. Service Packs include all the major and minor fixes up. microsoft also distributes intermediate updates to their operating systems in the form of Hotfix. The following steps descrive the automated process of deisoverting and…

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