Authentication in ppp - point to point , Computer Networking

Assignment Help:

Authentication in PPP

PPP can support  authentication operations at the  beginning of a connection. In some  cases reauthentication is also  possible  during  a session.  Endpoints negotiate authentication in the same manner as other options. Authentication is pee r to peer again without  distinction between calling and called parties. This allows either or both endpoints to request authentication credentials from each other. In fact the protocols  for passing  credentials may be differently  may be different for each endpoint. The default is no authentication required. However you can  configure you PPP  software to require it.

The authenticating state  of a PPP connection follows  the establishing  state if either  endpoint agrees tousle an authentication protocols. Otherwise  the connection  transitions immediately  to eh network  state skipping authentication steps altogether. The two common  authentication protocols authentication protocols are:

a.The password authentication protocols (PAP)

b.The challenge  handshake authentication protocols ( CHAP)

These  protocols  have  assigned  numbers and are arguments to the authentication protocols  options  PPP endpoints  include in LCP configure packets. As usual if one PPP endpoint requests  its peer to authenticate itself with a protocols  the peer doesn't understand the  peer  rejects it in an LCP  configure nak response. This endpoint may  propose another  protocols  its peer understand  or terminate the connection.

Each  authentication protocols  has well defined  procedures regarding the messages that endpoint must  send and receive during the authenticating state.  Besides PSP  and CHAP there are  other extensible authentication protocols  in development  and there exists several proprietary protocols  as well.


Related Discussions:- Authentication in ppp - point to point

What are the important benefits of computer network, Q. What are the import...

Q. What are the important benefits of computer network? Ans: Important benefits of computer networks are: -  Resource sharing -  Higher reliability -  Higher flexibili

Determine the rate of communication line, Determine the rate of communicati...

Determine the rate of communication line The dog could carry 21 gigabytes or 168 gigabits. A speed of 18 km/hour that is equal to 0.005 km/sec. The time to travel the distance

Error detection-redundancy, Q. Error Detection-Redundancy? In its p...

Q. Error Detection-Redundancy? In its place of repeating the entire data stream a shorter group of bits may be appended to the end of each unit. Called as -redundancy?

What is project 802, What is Project 802? It is a project begins by IEE...

What is Project 802? It is a project begins by IEEE to set standards that enable intercommunication among equipment from a variety of manufacturers. It is a way for specifying

Determine about the tree topology, Determine about the Tree Topology A ...

Determine about the Tree Topology A generalization of the bus topology. The transmission medium is a branching cable with no closed loops. The tree layout begins at a point kno

Which applications of computer network can be categorized, What are the mai...

What are the main categories based on which applications of computer network can be categorized? The major areas under which the applications for computer network can be divide

State about the communications network, State about the communications netw...

State about the communications network 1) The communications network may only accept blocks of data up to a specific size.   (2) Error control might be more effective with a

Write the definition of SAN, Write the definition of SAN A SAN is a sep...

Write the definition of SAN A SAN is a separate network to handle storage requirements. The SAN detaches storage tasks from specific servers and makes a shared storage facility

Explain session layer in osi model, Q. Explain Session Layer in osi model? ...

Q. Explain Session Layer in osi model? - The session layer defines how to control, start and end conversations (called sessions) between applications. - This includes the c

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