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Mis589 Week5 Essay

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Below is an essay on "Mis589 Week5" from Anti Essays, your source for research papers, essays, and term paper examples.

•Chapter 6—Questions R17

R17.
A permanent address for a mobile node is its IP address when it is at its home network. A care-of-address is the one its gets when it is visiting a foreign network. The COA is assigned by the foreign agent (which can be the edge router in the foreign network or the mobile node itself).

•Chapter 8—Questions R1, R3, R29.

R1.
Confidentiality is the property that the original plaintext message can not be determined by an attacker who intercepts the ciphertext-encryption of the original plaintext message.Message integrity is the property that the receiver can detect whether the message sent (whether encrypted or not) was altered in transit. The two are thus different concepts,and one can have one without the other. An encrypted message that is altered in transmit may still be confidential (the attacker can not determine the original plaintext) but will not have message integrity if the error is undetected. Similarly, a message that is altered in transit (and detected) could have been sent in plaintext and thus would not be confidential.

R3.
In symmetric key systems, the keys of receiver and sender are identical and are secret. In public key systems, a pair of keys is used. One of the keys is known to both receiver and sender, or in other word, to the whole world, while the other key is known only by sender. That’s the major difference between the two systems.

R29.
Stateful and Stateless IP .. There are several advantages to using a static IP filter. It has a combination of low overhead and high throughput. Stateless IP filters are very inexpensive, and many are free. They are included with router configuration software or are included with most Open Source operating systems. Being that a static IP filter does little more than simply route traffic, it is very good for traffic management.

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