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

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

Define byte stuffing, Sometimes the special character may see in data and a...

Sometimes the special character may see in data and as a part of data they will be misinterpreted as packet data. The solution to this cause is Byte stuffing.   In general to

Bus topology, BUS TOPOLOGY In a bus topology all devices are attached ...

BUS TOPOLOGY In a bus topology all devices are attached to a single long cable and any device can send data to any other device. For this function, coordination is needed to d

Vulnerability identification-risk management, Vulnerability Identification ...

Vulnerability Identification Specific avenues threat agents can exploit to attack an information asset are known as vulnerabilities. Examine how each threat can be generated and

Evaluations, Evaluations, Assessment, and Maintenance of Risk Controls W...

Evaluations, Assessment, and Maintenance of Risk Controls When the control strategy has been implemented, it should be monitored and measured on an ongoing basis to determine ef

Explain the various costs of quality, Problem 1: Show what are the bene...

Problem 1: Show what are the benefits of project quality management? • Customer satisfaction • Reduced cost • Increased competitiveness • Fulfilment of social and economic r

Packet filtering firewall-stateless packet filtering, Stateless Packet Filt...

Stateless Packet Filtering Stateless or static packet filtering is the most straightforward kind of packet filtering that allows or disallows data transfer based on the addres

The major decision hierarchy for disclosing security problem, QUESTION ...

QUESTION The major decision hierarchy for disclosing security problems is if the problem is with the product owned by the business or if it is used by the business. Although th

Selecting a risk control strategy-information security, Selecting a Risk Co...

Selecting a Risk Control Strategy Risk controls involve selecting one of the 4 risk control strategies for every vulnerability. The flowchart is shown in the figure given below

Processing an incoming arp message, PROCESSING AN INCOMING ARP MESSAGE ...

PROCESSING AN INCOMING ARP MESSAGE When an ARP message reaches, the protocol specifies that the receiver must operate two basic steps. First the receiver finds the sender's add

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