Re: OT: PPP PAP/CHAP One-way autehtication

On Wed, May 5, 2010 at 10:08, Syed Khalid Ali
<khalid_khursheed_at_hotmail.com> wrote:
> Group:
> Can any one explain PPP 1-way authentication. I read the document:
> http://www.cisco.com/en/US/tech/tk713/tk507/technologies_tech_note09186a00800
> 93c6f.shtml#ppp_authand tried the same example on GNS3 with two router
> connected with back to back serial. But it is not working.

When something "is not working", it is always a good idea to post your
configurations, so we can show you what you probably did wrong... :-)
Here's a quick example of R2 authenticating to R5, but not the other
way round.

! R2:
hostname R2
!
interface Serial0/2/0
 ip address 25.25.25.2 255.255.255.0
 encapsulation ppp
 ppp pap sent-username R2 password ipexpert
 no shutdown
!

! R5:
hostname R5
username R2 password ipexpert
!
interface Serial0/2/0
 ip address 25.25.25.5 255.255.255.0
 encapsulation ppp
 ppp authentication pap
 no shutdown
!

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