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UCS Home Help For: 
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 Project Overview & Definition Overview The Firewall Implementation Oversight Committee and resultant Project were formed in July 2001. The committee was charged with implementing and functionally configuring a software and hardware based Firewall solution on all Marshall University campuses. In conjunction with the Firewall, the committee was charged with converting all existing DHCP reservations and static addresses to be NAT compliant. Click here for Progress Report / Current Status Definitions So what exactly is a firewall? What does NAT stand for, and what does it mean? Firewall A firewall is a type of electronic filter that can be either software or hardware based, that prevents certain types of data packets from entering through our routers. In other words, a firewall is a filter that will not allow malicious external users the ability to compromise our network. What enhances the use of a firewall is the ability of our System Administrators and Network Administrators to designate which ports, or places of entry are allowed access by external users and resources. By doing this, we reduce our chances of being compromised (hacked) via malicious users by at least 75% or more. The implementation of the firewall is further augmented by using Network Address Translation (NAT). NAT Network Address Translation is the means by which an organization can increase its amount of Internet Protocol addresses per subnet without having to use valid address blocks. Basically, NAT allows us to use fake IP addresses for computers on campus, thereby placing them 'behind' the firewall and offering up that much more protection from electronic attacks. In our previous (current in some cases) network configuration, each computer had/has a unique Internet Protocol (IP) address that identified that machine to our computers and users on the network, but also identified them to the rest of the world. By implementing NAT, we are merely emphasizing and defining the segmentation that exists between the MUITE and the rest of the world. As you can see the combination of both a functional firewall and NAT can be a strong and effective deterrent when combating malicious electronic attacks and would-be electronic assailants. |
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