Password Authentication Protocol: Difference between revisions

Revision as of 11:52, 5 September 2007

Revision as of 11:56, 5 September 2007

Line 1:

'''Password

'''Password Authentication Protocol''', sometimes abbreviated '''PAP''', is a simple authentication protocol used to authenticate a user to a [[Network_access_server|network access server]] used for example by [[Internet service provider|Internet service providers]]. PAP is used by [[Point to Point Protocol]].

Authentication Protocol''', sometimes abbreviated '''PAP''', is a

simple authentication protocol used to authenticate a user to a

Authentication is a process of validating a user, accessing the resources. Almost all [[Network operating system]] remote servers support PAP.

[[Network_access_server|network access server]] used for example by

PAP transmits unencrypted [[ASCII]] passwords over the network and is therefore considered insecure. It is used as a last resort when the remote server does not support a stronger authentication protocol, like [[Challenge-handshake authentication protocol|CHAP]] or [[Extensible_Authentication_Protocol|EAP]] (while the last is actually a framework).

[[Internet service provider|Internet service providers]]. PAP is used

by [[Point to Point Protocol]].

Aditya Ja raha he bahut dur........

Authentication is a process of validating a user, accessing the

Authentication is a process of validating a user, accessing the resources. Almost all [[Network operating system]] remote servers support PAP.

support PAP.

PAP transmits unencrypted [[ASCII]] passwords over the network and is

therefore considered insecure. It is used as a last resort when the

remote server does not support a stronger authentication protocol, like

[[Challenge-handshake authentication protocol|CHAP]] or

[[Extensible_Authentication_Protocol|EAP]] (while the last is actually

a framework).

==Working cycle==

*Client sends username and password

*Server sends authentication-ack (if credentials are OK) or

authentication-nak (otherwise)

==PAP Packets==

{| class="wikitable"

Line 45 ⟶ 57:

|

|}

PAP packet embedded in a PPP frame. The protocol field has a value of C023 (hex).

C023 (hex).

PAP packet embedded in a PPP frame. The protocol field has a value of C023 (hex).

{| class="wikitable"

|-

Line 58 ⟶ 69:

!Flag

|}

==See also==

* CHAP - [[Challenge-handshake authentication protocol]]

* EAP - [[Extensible_Authentication_Protocol]]

{{compu-network-stub}}

[[Category:Authentication methods]]

[[Category:Internet protocols]]

[[de:Password Authentication Protocol]]

[[es:PAP]]