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

Labels and label switching, An ATM network is created from interconnected A...

An ATM network is created from interconnected ATM switches. The attachment ports or points can be connected to computers or other ATM switches. As cells reach at an ATM switch, the

Explain fddi media, FDDI Media FDDI signifies a 100 Mbps token-passing ...

FDDI Media FDDI signifies a 100 Mbps token-passing dual-ring LAN that uses a fiber-optic transmission medium. Even though it operates at faster speeds FDDI is similar to Tok

Troubleshooting tcp/ip, I''m having trouble with understanding a diagram fo...

I''m having trouble with understanding a diagram for my assignment

Show upper layers of tcp-ip model, Q. Show Upper Layers of tcp-ip model? ...

Q. Show Upper Layers of tcp-ip model? The Session Layer - The Session layer allows two parties to hold ongoing communications called a session across a network. - Not

Example of wan technologies, Some multiple WAN methods are defined below: ...

Some multiple WAN methods are defined below: ARPANET: It start in 1960's. It was operated by Advanced Research Project Agency, which is a company of US defense department.

Residential access - computer network, Residential Access Residential ...

Residential Access Residential  access is connecting home  end  systems ( typically a PC but increasingly a home network) into the network. One form  of residential  access  i

Factor causing parallel overheads, Factor Causing Parallel Overheads F...

Factor Causing Parallel Overheads Figure clearly explains that the performance metrics are not able to achieve a linear curve in comparison to the enhance in number of process

How to perform basic switch configurations-ccna, How to Perform Basic Switc...

How to Perform Basic Switch Configurations Step : Complete basic configuration of switches S1, S2, and S3. Configure the S1, S2, and S3 switches according to the following

Compare Intranet with Internet and LAN, Intranet vs Internet vs LAN It...

Intranet vs Internet vs LAN It is certainly possible that both Intranets and the Internet can coexist. As spelt theoretically, the entire Intranet could be located at a remote

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