From: austin.2.alao@xxxxxx
Date: Tue Apr 09 2002 - 09:28:51 GMT-3
I know everyone says ask the proctor, but that is not always advisable.
One, he may get biased against you - happened to me; two, you would be
wasting valuable time.
The best thing if you have a question like this before the day is to ask
Marc Russell if you bought his labs, or check the CD for the command
options.
Best to understand the commands totally than memorise a particular scenario
and how to configure it.
HTH.
Austin.
-----Original Message-----
From: ying chang [mailto:ying_c@hotmail.com]
Sent: 09 April 2002 13:04
To: Guy.Lupi@eurekaggn.com; ccielab@groupstudy.com
Subject: RE: multiple-choice: one way ppp auth chap
Thanks guys.
I guess I'll take Mas Kato's approach if the good procotor has troubles to
understand my broken English. Should spent more time in English instead of
chasing girls all over the town when I was young.
Time to back to my dungeon.
I'm learning...
Thanks,
Chang
>From: "Lupi, Guy" <Guy.Lupi@eurekaggn.com>
>To: 'ying chang ' <ying_c@hotmail.com>, "'ccielab@groupstudy.com '"
><ccielab@groupstudy.com>
>Subject: RE: multiple-choice: one way ppp auth chap
>Date: Mon, 8 Apr 2002 23:27:33 -0400
>
>I think the proper way to approach this scenario is by the way the
>question is asked. If the requirement is that both routers be able to
>authenticate, but in any transaction only one should authenticate, then
>"ppp authentication chap callin" on both sides. If the requirement is
>that a particular router in the pair only authenticate inbound calls,
>the "ppp authentication chap callin" on one side, "ppp authentication
>chap" on the other. If only one router should ever authenticate, then
>"ppp authentication chap" on that router, and no "ppp authentication
>chap" on the other. At least that is the way I would approach it, of
>course the proctor is always there, and I have heard they are helpful
>as long as you don't ask them how to do something. Maybe you could
>just ask what exactly they mean.
>
>-----Original Message-----
>From: ying chang
>To: ccielab@groupstudy.com
>Sent: 4/8/2002 10:14 PM
>Subject: multiple-choice: one way ppp auth chap
>
>Sorry about beating the dead horse. I need help to get this one down.
>What is your choice in case you are asked to do "one way ppp
>authentication"? The
>"debug ppp auth" result is at the bottom of each case, I know most
>people
>would choose B, but I feel a little bit uneasy on mutual authentication
>taking place when r2 calls r1:
>
>A. r1 - ppp auth chap callback
> r2 - ppp auth chap
>
> result: r1 call r2 => r2 challenge r1
> r2 call r1 => r2 challenge r1
>----------------------------------------------
>B. r1 - ppp auth chap callin
> r2 - ppp auth chap
>
> result: r1 call r2 => r2 challenge r1
> r2 call r1 => mutual authentication
>----------------------------------------------
>C. r1 - ppp auth chap callin
> r2 - ppp auth chap but r2 is not allowed to call r1
>
> result: r1 call r2 => r2 challenge r1
>----------------------------------------------
>D. r1 - ppp auth chap callin
> r2 - no ppp auth chap statement
>
> result: r1 call r2 => no authentication
> r2 call r1 => r1 challenge r2
>-----------------------------------------------
>
>Thanks,
>Chang
>
>
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