NT1110T
Wednesday May 9, 2012
Lab 7: Security Basics

Task 1 Hardware and Software Firewalls
Barracuda Networks has a wide variety of Software and Hardware firewalls. They produce Spam and Virus firewalls protection, Web Filtering, and Barracuda Central. Barracudas Spam and Virus protection uses different methods of keeping your network secure such as 12 Defense Layers, Barracuda Reputation and Intent Analysis ,Predictive Sender Profiling, Barracuda Real-Time Protection, Triple Layer Antivirus Protection, Image Spam Protection, PDF Spam Protection, Mail Transport and Policy, and Clustering. Barracuda’s Web filtering methods include Spyware Protection, Application Blocking, Content Filtering, and Content Categories. All of these methods are then filtered into Barracuda Central where the main hub of Barracuda’s security program works its filtering throughout the web.

Barracuda Central Collects Data From All Over The World
Barracuda Central collects emails, URLs and other data from all over the world. Barracuda Central has thousands of collection points located in over 100 countries. In addition, Barracuda Central collects data contributions from more than 100,000 Barracuda products in use by customers. Barracuda Central analyzes the data collected and develops defenses, rules and signatures to defend Barracuda's customers.
You can purchase a Barracuda web router and use their personalized software for your computer system which is fed into the Barracuda hardware throughout the network.

Task 2 1. Most good antivirus software is not cheap, but to find out which one best suite your needs you can download free trials from a couple of different versions. Norton, McAfee, and Kaspersky all have free trial versions of their antivirus software. Most of them only last about 90 days where you will have to purchase the full version if you want to continue to protect your system, which can be costly but worth it. Some free trials do not give you the full version trial of the software but in most cases they do. Panda and AVG antivirus programs are downloadable for free on the internet. Although being and free antivirus software program one might think it is not as good as the products you pay for, but through trial and error you can find what works for you. 2. There are many types of attacks your computer can encounter using the web. Examples are Viruses, Trojans, Spyware, malicious email attachments, and drive-by-downloads. A virus is one of the most common attacks your computer may receive. A virus’s function is to infiltrate your system and shut down certain parts of your system while gathering data. A virus is simply a coded program that has a main purpose and that is to get into your computer and do its job. Spyware is basically the way it sounds. It enters your system and attaches itself it, and it copies everything you do on your computer and reports back to the spywares owner. A Trojan basically infiltrates your computer system through a hole in the firewall and allows for a back door to be opened so that a hacker can infiltrate your computer system without your knowledge. A Trojan can also shut down your entire firewall to allow the hacker to infiltrate through the front but at the same time it can allow just about all viruses to enter your system as well. A drive-by-download is a something that most people don’t even realize has happened. Thinking that they are clicking on a single download of some type of application or a pop up window, allows viruses and malware to download into your system by just clicking it.

Task 3 1. There are three different types of backups, Full Backups, Differential Backups, and Incremental Backups. Full Backups will back up all files on a partition or on a disc by copying on all disc sectors. Full backups take a lot of time to do considering they are done only once a week and backup all files. A differential backup is usually done once a day and only backs up files that have changed since the last backup. An incremental backup is much like a differential backup, only copying files that have changed, but they can be done several times during a day. 2. Backups should be stored off site and tested periodically so that you can make sure that all your data has been completely copied and to make sure that your data cannot be corrupted or stolen. It also allows you to be able to retrieve your data incase a natural disaster occurs. 3. There are three types of sites for backups, hot, cold, and warm. As a cold site is the least expensive they also do not consist of full hardware ready and network ready systems and in hand copies of data. A hot site is the most expensive being an exact replica of the organizations systems and networks along with all its data. A warm site is in between cold and hot, they have most of the hardware and systems needed but on a much smaller scale than the original.

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