Operation System Security Essay

1. What are the relative advantages and disadvantages of at least three antithetical measures utilise to protect operating(a) systems?2. The ease of implementation of the measures.3. The associated security instruction issues related to measures discussed above.4. The ranking of the measures from best to worst with supporting rationale declarationAntivirus Antivirus is the easiest protective measure that can be implemented on an operating system, and is also usu all in ally very easy to maintain. An update schedule is scheduled, or the antivirus software is tackd to be managed by a central antivirus innkeeper which disseminates updates and virus signatures. Having an up-to-date anti-virus is always a good idea it doesnt take much work, and offers a decent amount of protection.Image-Locking software This token of solution which exists in software such as Deep stymie takes an image of the computer on startup to which it reverts after each restart. time this does little to prev ent the computer from being compromised, it provides the ability to undo all changes, including any changes an attacker may have do, by restarting the computer. This is more voiceless to implement, and is not an acceptable solution on troopss that need to maintain driving information, such as a database, as it would lose all unseasoned information entered since the image was created on reboot.Host Intrusion Detection placement A Host Intrusion Detection system is similar to Antivirus in that it looks for suspicious activity and compares against a definition file, but it also inspects earnings traffic that comes through the local interface. This allows the HIDS to detect an attack before it has in reality put anything on your computer. HIDS also creates a host baseline, to which changes are describe to an administrator. This can result in a lot of logs if changes are made on a regular basis. This solution is both difficult to configure and maintain.In a real environment, you arent restricted to using a single solution. If you have the resources to support it, running multiple Antivirus programs is suggested as incompatible vendors may publish definitions earlier than others. Antivirus can also be used in tandem with the other solutions, creating a more secure host