Address masks, Computer Network Security

Assignment Help:

ADDRESS MASKS

To identify receiver, network apply address mask to receiver address and calculate to network address in routing table. It can use Boolean 'and' to calculate the ith entry in the table.

 

i.e. if ((Mask[i] & D) == Dest[i] ) forward to NextHop[i]

 

FORWARDING, DESTINATION ADDRESS AND NEXT-HOP:

 

 Receiver address in IP datagram is usually ultimate destination. Router looks up next-hop address and transfer datagram. Network interface layer operates on two parameters:

 

  • IP datagram
  • Next-hop address

 

Next-hop address never sees in IP datagram.

BEST-EFFORT DELIVERY:

 IP gives service equivalent to LAN. It does not guarantee to save duplicate packets, out-of-order delivery or delayed, corruption of datagram loss and data. Transport layer gives reliable delivery. Network layer - IP - can checked and report errors without actually solving them. It focuses on packet delivery. Application layer is not interested in differentiating among delivery causes at intermediate routers.

 


Related Discussions:- Address masks

Linux, Discuss the risks of having a single root user

Discuss the risks of having a single root user

Military and space technology, crack the secret message and explain how the...

crack the secret message and explain how the code works. The clue is that it has something to do with the computer keyboard. J-Q-H-6 Q-E-F-Q-H-D-3-W 8-H 5-Y-3 7-W-3 9-R--D-9-J

Describe the two possible configurations for 3des, QUESTION (a) Describ...

QUESTION (a) Describe the two possible configurations for 3DES (b) What is the main disadvantage of 3DES? (c) Why are most modern symmetric algorithm block ciphers? (d

Define multimedia and application of multimedia, Describe the salient featu...

Describe the salient features of the multimedia. Also explain the applications of it. Multimedia can be understood as follows: Multimedia is on the whole a media which makes

Introduction to cryptography, INTRODUCTION TO CRYPTOGRAPHY Cryptography...

INTRODUCTION TO CRYPTOGRAPHY Cryptography The word cryptography is derived from Greek words kryptos, which means hidden and graphein, meaning to write, this is the process of

Pseudonymous remailers and cypherpunk remailers, Problem (a) As a fore...

Problem (a) As a forensic investigator, you are needed to trace the source of an email. It is suspected that the email header has been forged. Show how you would proceed to

Explain the security service - confidentiality, Question: (a) Explain t...

Question: (a) Explain the following security services: Confidentiality, Availability. (b) Which attack will be used to bypass even the best physical and logical security m

Security and basics steps in writing thesis, how can i start thesis? Please...

how can i start thesis? Please mention so of examples?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd