Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
What are the Unix-based firewalls The Unix-based firewalls are considered most secured as compared to the Windows NT based ones. The firewalls bind the holes of the operating
In slotted Aloha system, it has been measured that 70% of slots are occupied by frames (i.e. the remaining slots are empty). a) How many frames need to be transmitted, on aver
Data Parallel Programming In the data parallel programming model, main focus is on performing simultaneous operations on a data set. The data set is typically prepared into a c
Connect a Router and Computer with a Console Cable Step 1 : Set up a basic physical connection. Connect the console (rollover) cable to the console port on the router. Link
Concept Of Permutation Network In permutation interconnection networks the information transfer necessitates data transfer from input set of nodes to output set of nodes and po
Firewalls Firewalls emerged as a new technology in 1990s but its idea was present near two decades back. Historical context of "Firewall" is quite literal. It was in use to des
Enumerate about the Home Page and Hot Links Home Page: The primary Web page for an individual or organisation. These pages link to other related pages. Hot Links: A co
What are the Call routers Call routers A, B, C, D, and E. There are ten potential lines: AB, AC, AD, AE, BC, BD, BE, CD, CE, and DE. Each of these lines has four possibilities
Q. Describe Flow and Error Control Mechanisms? Flow and Error Control Mechanisms - Stop and Wait ARQ - Go-Back ARQ - Selective Repeat ARQ
What are the disadvantages of bus topology? The disadvantages of bus topology are: a. The bus networks are dissimilar to reconfigure, especially when the acceptable number o
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd