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 is a link, What is a Link? A link refers to the connectivity among...

What is a Link? A link refers to the connectivity among two devices. It contains the type of cables and protocols used in order for single device to be able to communicate with

Extranet, Extranets can also be utilized to link an intranet to the Interne...

Extranets can also be utilized to link an intranet to the Internet in order that remote offsite access can be built into a company's intranet through an authorized individual. It c

Explain the multipath resistance, Explain the Multipath resistance The ...

Explain the Multipath resistance The chipping codes used for CDMA not only exhibit low cross-correlation but also low autocorrelation. Thus, a version of the signal that is del

Key features of spontaneous networking, QUESTION a) Give a detailed exp...

QUESTION a) Give a detailed explanation of the following: Some dynamics systems can be built as variations on the client server model. b) Give one main drawback of the "Thin

How intranet is different from internet, How Intranet is different from Int...

How Intranet is different from Internet? Generally an Intranet is different from an Internet in the following ways: i. Intranet is a network within the organisation whereas

Broadcast and multicast , Broadcast and Multicast : Broadcast and Mult...

Broadcast and Multicast : Broadcast and Multicast :In the broadcast interconnection network, at one time one node transfer the data and all other nodes get that data.  Broadca

Inductor, #clasification of inductor

#clasification of inductor

Show the character-level encryption, Q. Show the Character-level Encryption...

Q. Show the Character-level Encryption? - Substitutional - Monoalphabetic - simplest form; also called Caesar cipher - Every character is replaced with another character

Process of skype is a web-based service, Skype is a web-based service which...

Skype is a web-based service which offers cheap and free phone calls. Explain step by step (in terms of networking technology) what really happens from the point when you initiate

Explain the acknowledged connectionless service, Explain the Acknowledged c...

Explain the Acknowledged connectionless service This is a cross between the previous two services. It provides that datagrams are to be acknowledged, but no prior logical conne

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