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

Non-repudiation and auditing, Proof that the sender forwards the message. I...

Proof that the sender forwards the message. It also prohibits the author of the code from falsely denying that he forward the message. This is achieved by record using the exact ti

Design a network layout, QUESTION: (a) Below is a capture of an Ethern...

QUESTION: (a) Below is a capture of an Ethernet II frame which contains an IPv4 packet and a TCP segment. Give the source MAC address for the frame in hexadecimal; the sourc

Assignment, Hello i have submitted an assignment and i am still waiting to ...

Hello i have submitted an assignment and i am still waiting to know if it has been accepted or not the ref number is TicketID: EM201381BRY525CN, the due date is for monday 27th of

Potential risks to information systems, Information System Security 1. ...

Information System Security 1. Write about: a. Potential Risks to Information Systems b. Factors to be addressed for making information systems more secure 2. Write about t

Explain about security aware protocols, Q. Explain about Security aware pro...

Q. Explain about Security aware protocols? The security-Aware ad hoc Routing (SAR) protocol based on the security attributes integrated into the ad hoc route discovery provides

Issue-specific security policy (issp), Issue-Specific Security Policy (ISSP...

Issue-Specific Security Policy (ISSP) The ISSP addresses specific areas of technology, needs frequent updates and having statement on organization’s position on a particular iss

Cryptographic hash functions, (a) (i) Bob has public RSA key (n = 77, e...

(a) (i) Bob has public RSA key (n = 77, e = 7). Show that Bob's private key is (d = 43). (ii) Alice wants to send the message m = 13 to Bob. She encrypts the message usi

Corresponding access control matrix, Consider a computer system with three ...

Consider a computer system with three users: Alice, Bob and Cindy. Alice owns the file alicerc, and Bob and Cindy can read it. Cindy can read and write the file bobrc, which Bob ow

Components of an information system, COMPONENTS OF AN INFORMATION SYSTEM ...

COMPONENTS OF AN INFORMATION SYSTEM The components of an information system are software, data, hardware, people, procedures and Networks. These 6 components are critical to ena

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