Network Security Paper
By: Jessica • Essay • 731 Words • January 17, 2010 • 827 Views
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Discussion Questions
„X When is IPSec appropriate? When is SSL / TLS appropriate?
o IPSec is used to create secure VPN connections across the Internet for remote access and branch office connectivity. IPSec is a general technology for securing IP traffic; it is designed to work in two different models: transport mode and tunnel mode.
o SSL / TLS is designed for client application-to-server application authentication and encryption. Therefore, the general purpose of use is whenever authentication and data protection are necessary.
„X At what layer does IPSec function in?
o IPSec works at the IP layer of the Transmission Control Protocol / Internet Protocol (TCP/IP) stack; it works on the Network layer of the OSI model.
„X What are two important VPN protocols for remote access VPN connections?
o Point-to-Point Tunneling Protocol (PPTP)
o Layer Two Tunneling Protocol (L2TP) with Internet Protocol Security
„X Why do organizations want to move to a single sign-on environment?
o The objective of a single sign-on environment is to require the user to authenticate once. It ultimately delivers ease of use among users. Single sign-on environments increases the usage of a system, increase returns on technical investments, and reduces cost for maintaining multiple passwords and usersЎ¦ names.
Short Answers Explanation to Explain the Difference
„X Historical and statistical logging
o Historical logging is a complete recording of all data passing through a device.
o Statistical logging is statistics that are kept on each data port.
„X File security and firewalls
o File Security is a translation of an encrypted file in which you must have access.
o Firewall is a system designed to prevent unauthorized access to or from a private network.
„X Secret and public keys
o Secret key is known only to the recipient of the message.
o Public key is known to everyone.
„X Symmetric and asymmetric keys
o Symmetric (same key to encrypt and decrypt)
o Asymmetric (public key to encrypt, private key to decrypt)
„X Digital certificate and digital postmark
o Digital certificate is an attachment to an electronic message used for security purposes.
o Digital postmark is a network security mechanism to identify which region a packet or set of packets comes from.
„X Plaintext & ciphertext
o Plaintext is information used to input to an encryption algorithm.
o Ciphertext is encrypted text.
„X Decipher & encipher
o Decipher ЎV Convert code into ordinary language.
o Encipher is to convert plain text into an unintelligible form by means of a cipher.
„X IPSec VPNs & SSL VPNs
o IPSec ЎV Internet Protocol Security
o SSL ЎV Secure Sockets Layer
Short Answers Explanation to Define
„X RSA cryptographic algorithm
o RSA is a public key algorithm