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

Work-sharing constructs in openmp, Work-Sharing Constructs A work-shari...

Work-Sharing Constructs A work-sharing construct distributes the implementation of the associated region between the members of the team that encounters it. A work-sharing cons

State sonet frame, SONET Frame Can be viewed as a matrix of nine rows ...

SONET Frame Can be viewed as a matrix of nine rows of 90 octets every for a total of 810 octets.  A few used for control they aren't positioned at the beginning or end of the

Classes and dotted decimal notation, The relationship between dotted decima...

The relationship between dotted decimal notation and classes is shown as follows. In class A the three octets managed to a host suffix. In class B the last most two octets ar

What are the threats include in computer software, What are the threats inc...

What are the threats include in computer software The second component vulnerable to threats to the system is software. Threats to software may include, but are not limited to

Computes their distance vector for network, Consider the following network ...

Consider the following network example. Suppose that the distance vector (DV) routing algorithm is used to compute the distance between nodes. (a) Show the procedure of nod

Packet cost - network layer and routing , Packet  Cost Both  distance ...

Packet  Cost Both  distance vector and link  state  routing  are lowest  algorithms. Tow factors  govern  how  cost is applied to packets  in determines  a route. Cost  is a

Determine about the tcp/ip and osi model, Determine about the TCP/IP and OS...

Determine about the TCP/IP and OSI model Both models are based on the layered protocols. Both comprise network, transport and application layer. In both the models, transport s

What is sliding window protocols, Q. What is Sliding Window protocols? ...

Q. What is Sliding Window protocols? Alternatives: Sliding Window protocols - One task begins prior to the other one ends                                     (concept of

Network topology, identify different network topologies.

identify different network topologies.

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