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1.     Introduction and Feasibility

2.     Network Needs and Analysis

3.     Global Media & Communications (1stGMC)

4.     Network services : local area networks

5.     Network services : wide area networks

6.     DHCP

7.     WinRoute

8.     Default Gateway

9. DNS

10. Building Cabling

10.1.                    Introduction

10.2.                    Standards

11. Topology

12. Telecommunications Closet

13. Dell Blade Server

14. Cisco Router

15. Catalyst 2950 Series Switch

16. Catalyst 3550 Series Switch

17. Cisco Micro Hub 1538 Hub – 8 Port

18. APC Smart-UPS 500VA USB & Serial 100V Black

19. Firewall

20. Network services : voice over ip

21. Network services : replication

22. ModernGraphics.Com

23. Cost-Benefit Analysis

24.  APPENDIX

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security : encryption

encryption is the conversion of data into a form, called a ciphertext, that cannot be easily understood by unauthorized people. Decryption is the process of converting encrypted data back into its original form, so it can be understood.

The use of encryption/decryption is as old as the art of communication. In wartime, a cipher, often incorrectly called a "code," can be employed to keep the enemy from obtaining the contents of transmissions.

(Technically, a code is a means of representing a signal without the intent of keeping it secret; examples are Morse code and ASCII.) Simple ciphers include the substitution of letters for numbers, the rotation of letters in the alphabet, and the "scrambling" of voice signals by inverting the sideband frequencies.

More complex ciphers work according to sophisticated computer algorithms that rearrange the data bits in digital signals.

In order to easily recover the contents of an encrypted signal, the correct decryption key is required. The key is an algorithm that "undoes" the work of the encryption algorithm.

Alternatively, a computer can be used in an attempt to "break" the cipher. The more complex the encryption algorithm, the more difficult it becomes to eavesdrop on the communications without access to the key.

encryption/decryption

encryption/decryption is especially important in wireless communications. This is because wireless circuits are easier to "tap" than their hard-wired counterparts.

Nevertheless, encryption/decryption is a good idea when carrying out any kind of sensitive transaction, such as a credit-card purchase online, or the discussion of a company secret between different departments in the organization.

The stronger the cipher -- that is, the harder it is for unauthorized people to break it -- the better, in general. However, as the strength of encryption/decryption increases, so does the cost.

In recent years, a controversy has arisen over so-called strong encryption. This refers to ciphers that are essentially unbreakable without the decryption keys.

While most companies and their customers view it as a means of keeping secrets and minimizing fraud, some governments view strong encryption as a potential vehicle by which terrorists might evade authorities.

These governments, including that of the United States , want to set up a key-escrow arrangement. This means everyone who uses a cipher would be required to provide the government with a copy of the key.

Decryption keys would be stored in a supposedly secure place, used only by authorities, and used only if backed up by a court order.

Opponents of this scheme argue that criminals could hack into the key-escrow database and illegally obtain, steal, or alter the keys.

Supporters claim that while this is a possibility, implementing the key escrow scheme would be better than doing nothing to prevent criminals from freely using encryption/decryption.

security news



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A former research scientist at DuPont has admitted to stealing proprietary and technical information valued at $400 million from the company in a case that highlights the insider threat that security managers dread.

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