physical and logical network design
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Network Security concepts
In today's fast paced, Internet dependant environment, words such as encryption keys, firewalls, data security and file security are used more frequently and used in the IT world. As world becomes a safe heaven for the good and the bad in a common environment called Internet, understanding these terminologies are more important than ever. New vulnerabilities are discovered in applications you may or may not use, or possibly with underlying technology or functions which may or may not be used by applications used in your network. Trying to keep up with emerging threats, applying patches against known vulnerabilities, updating antivirus software, updating firewall rules and all of the other security measures can have a network or security administrator working around the clock. It is important to address the security issues that affect network, but it is even more important to be able to sift through the mountains of potential threats and determine which ones truly affect your network so that your time and resources can be put to the most efficient use. To fully understand such important subject, one needs to understand the most common terms tossed around in the networking world.
File Security refers to the process of securing and maintaining integrity of user documents on a server. When a person is part of a particular Access Control List, they are able to view, edit, modify, and delete particular files based upon the permission defined in SAL. While the file security deals mostly with access to folders and files on a particular server, firewalls provide security on the network level by allowing or disallowing traffic coming in and out of the network. A firewall is a system or group of systems that implement an access control policy between two networks...