Authentication in ppp - point to point , Computer Networking

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.

Posted Date: 3/16/2013 7:15:34 AM | Location : United States







Related Discussions:- Authentication in ppp - point to point , Assignment Help, Ask Question on Authentication in ppp - point to point , Get Answer, Expert's Help, Authentication in ppp - point to point Discussions

Write discussion on Authentication in ppp - point to point
Your posts are moderated
Related Questions

Monitor Stations Lost tokens - timer is issued each time a frame or token is generated If no frame is received in time period new token is generated by a monitor stat

Cost Saving Better performance  scalability  and viability  translates into  saving  for  website  operators.  Because  fewer  application  web servers are required  to meet

Twisted Pair Cable Twisted pair cable  consists of two insulated copper  wires  each  about 1 mm  thick arranged in a regular spiral  pattern. The wires  are twisted together

(a) You are provided with the following: A. An RSA facility complete with public/private key pair B. A CBC (cipher block chaining) facility incorporating the IDEA block ciph

ARP - Address Resolution Protocol It is the protocol that traces IP addresses to MAC addresses. RARP - Reverse Address Resolution Protocol It is the protocol within the TC

Q. Explain about Traffic shaping ? Traffic shaping -Method to control the amount and the rate of the traffic sent to the network.? Leaky bucket Token bucket -

Discuss about the Software in detail Software contain a number of components such as SQL Server for database connectivity, Systems Management Server for easy Web management,

LEASED SATELLITE CHANNEL: It may span arbitrarily big distance. It is given in the figure below.   Figure Satellite connections are low bandwidth to protect cost

How is final different from finally and finalize ()? Final is a modifier which can be applied to a class or a method or a variable. final class can't be inherited, final method