Encryption authentication - point to point , Computer Networking

Assignment Help:

Encryption Authentication

One common  technique  used to encrypt and authenticate in VPNs is IP security. IP sec  is a collection of protocols designed by the IETF( Internet Engineering  Task Force) to provide  security for a packet carried by the internet. instead it provides a framework and  a mechanism it leaves the selection of the  encryption authentication method  to the user.

IP sec  uses an authentication heard. The  authentication header  is an extra header  added to the data packet at the transport layer before  the IP  header is added.

When  an IP datagram carries an authentication header the protocols  field sin the IP header changes to a value of 51 show that the  datagram carries an AH A  field inside  the AH defines  the original  value  of eh protocols fields.

IP sec  uses  a mechanism  called encapsulation security  payload. ESP first  the  data  packet at the  transport layer  then  adds one extra header and one  extra trailer.

The ESP  header  define the algorism used for encryption. The ESP  trailer aligns the  packet  to the length required by some  encryption  algorithms. The ESP  trailer aligns tains  the authentication data  for the  whole packet excluding the IP  header. The value  of the  protocols  fields is 50 in the IP header  to indicate the use  of ESP.


Related Discussions:- Encryption authentication - point to point

Explain routing loop issue in rip protoco, Can you determine routing loop i...

Can you determine routing loop issue in RIP protocol?

Command that shows traffic statistics on serial 0/1, Recognize the command ...

Recognize the command that shows traffic statistics on serial0/1? Ans) show interface serial 0/1

Exam, i have an exam i need it to be solved

i have an exam i need it to be solved

Medium earth orbiting satellite, Medium Earth Orbiting satellite is an orbi...

Medium Earth Orbiting satellite is an orbit which is located just above the few hundred miles to a few thousands above the earth surface. It is of higher advantage than Low orbit s

Distributed enrollment protocol dep, Introduction: This is a specialized p...

Introduction: This is a specialized protocol designed for CS5244. It provides a distributed means to access a BasicEnrollmentManager implementation through client-server communica

Define the term - hot swapping, Define the term - Hot swapping The rel...

Define the term - Hot swapping The reliability of the machine can be dramatically improved by installing the best components. Hot swapping is a concept through which component

Describe about radio waves, Radio Waves - Frequency ranges: 3 KHz to 1...

Radio Waves - Frequency ranges: 3 KHz to 1 GHz - Omni directional - Susceptible to interference by other antennas utilizing same frequency or band - Ideal for long-di

Function of the transport system and workbench organizer, What is the funct...

What is the function of the transport system and workbench organizer? The function of the transport system and the Workbench Organizer is to handle any changes made to objects

What is the igp (interior gateway protocol), Any protocol used by an intern...

Any protocol used by an internetwork to exchange routing data within an autonomous system. E.g. RIP, IGRP and OSPF.

Thin ethernet wiring, THIN ETHERNET WIRING: Thin Ethernet needs thin c...

THIN ETHERNET WIRING: Thin Ethernet needs thin coax cable that is cost effective and easier to install than thick Ethernet coax. In this case transceiver electronics are creat

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