PPP Authentication

Posted by June 22, 2010 in HDLC & PPP

Scenario:

The puppet business is becoming more popular everyday and that’s why your boss decided to have redundant links between the 2 sites. Since they are afraid of company espionage you also need to configure authentication.

Goals:

  • All IP addresses have been preconfigured as specified in the topology picture.
  • Configure both links for encapsulation PPP.
  • Use PAP authentication on the 10.10.12.0 link, use password “VAULT”.
  • Use CHAP authentication on the 10.11.12.0 link, use password “CISCO”.

It took me 1000s of hours reading books and doing labs, making mistakes over and over again until I mastered all the protocols for CCNA.

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I collected all my knowledge and created a single ebook for you that has everything you need to know to become a master of CCNA.

You will learn all the secrets about PPP, authentication using PAP or CHAP and more.

Does this sound interesting to you? Take a look here and let me show you how to Master CCNA!

IOS:

c3640-jk9s-mz.124-16.bin

Topology:

PPP Authentication

Video Solution:

Configuration Files

You need to register to download the GNS3 topology file. (Registration is free!)

Once you are logged in you will find the configuration files right here.

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Written by René Molenaar - CCIE #41726

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About the Author: Rene Molenaar

René - CCIE #41726 is the creator of GNS3Vault.com where he shares CCNA, CCNP and CCIE R&S labs. He also blogs about networking on http://networklessons.com

4 Comments

  1. Hi i am facing a problem with this lab i tried may times but when using pap my line protocol is down

    heres my conig only thing i have named the routers 1 & 2

    [b]R1[/b]#sh run
    Building configuration…

    Current configuration : 1266 bytes
    !
    version 12.4
    service timestamps debug datetime msec
    service timestamps log datetime msec
    no service password-encryption
    !
    hostname R1
    !
    boot-start-marker
    boot-end-marker
    !
    !
    no aaa new-model
    memory-size iomem 5
    !
    !
    ip cef
    no ip domain lookup
    !
    !
    ip auth-proxy max-nodata-conns 3
    ip admission max-nodata-conns 3
    !
    multilink bundle-name authenticated
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    username router password 0 ccna
    archive
    log config
    hidekeys
    !
    !
    !
    !
    !
    !
    !
    !
    interface FastEthernet0/0
    no ip address
    shutdown
    duplex auto
    speed auto
    !
    interface FastEthernet0/1
    no ip address
    shutdown
    duplex auto
    speed auto
    !
    interface Serial1/0
    ip address 10.10.12.1 255.255.255.0
    encapsulation ppp
    serial restart-delay 0
    clock rate 64000
    ppp authentication pap
    !
    interface Serial1/1
    ip address 20.20.12.1 255.255.255.0
    encapsulation ppp
    serial restart-delay 0
    ppp authentication pap
    ppp pap sent-username rijo password 0 ccna
    !
    interface Serial1/2
    no ip address
    shutdown
    serial restart-delay 0
    !
    interface Serial1/3
    no ip address
    shutdown
    serial restart-delay 0
    !
    no ip http server
    no ip http secure-server
    !
    ip forward-protocol nd
    !
    !
    !
    !
    !
    !
    control-plane
    !
    !
    !
    !
    !
    !
    !
    !
    !
    line con 0
    exec-timeout 0 0
    logging synchronous
    line aux 0
    line vty 0 4
    !
    !
    end

    R2#sh run
    Building configuration…

    Current configuration : 1220 bytes
    !
    version 12.4
    service timestamps debug datetime msec
    service timestamps log datetime msec
    no service password-encryption
    !
    hostname R2
    !
    boot-start-marker
    boot-end-marker
    !
    !
    no aaa new-model
    memory-size iomem 5
    !
    !
    ip cef
    no ip domain lookup
    !
    !
    ip auth-proxy max-nodata-conns 3
    ip admission max-nodata-conns 3
    !
    multilink bundle-name authenticated
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    username rijo password 0 ccna
    archive
    log config
    hidekeys
    !
    !
    !
    !
    !
    !
    !
    !
    interface FastEthernet0/0
    no ip address
    shutdown
    duplex auto
    speed auto
    !
    interface FastEthernet0/1
    no ip address
    shutdown
    duplex auto
    speed auto
    !
    interface Serial1/0
    ip address 10.10.12.2 255.255.255.0
    encapsulation ppp
    serial restart-delay 0
    clock rate 64000
    ppp authentication pap
    !
    interface Serial1/1
    ip address 20.20.12.2 255.255.255.0
    encapsulation ppp
    serial restart-delay 0
    ppp authentication pap
    !
    interface Serial1/2
    no ip address
    shutdown
    serial restart-delay 0
    !
    interface Serial1/3
    no ip address
    shutdown
    serial restart-delay 0
    !
    no ip http server
    no ip http secure-server
    !
    ip forward-protocol nd
    !
    !
    !
    !
    !
    !
    control-plane
    !
    !
    !
    !
    !
    !
    !
    !
    !
    line con 0
    exec-timeout 0 0
    logging synchronous
    line aux 0
    line vty 0 4
    !
    !
    end

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