Re: IEWB vol2 Lab3, task 3.1 - PPP authentication

From: Radoslav Vasilev (deckland@gmail.com)
Date: Fri Sep 29 2006 - 09:52:17 ART


Which basically means that the password is shared between the two systems.

On 9/29/06, Ivan <ivan@iip.net> wrote:
> I haven't IEWB. But generally ppp-auth principle follows:
> 1) R4 for example (may be first R5)
> send challenge packet to R5, wich consist PacketID + RandomValue + AuthName
> 2) R5 make the MD5 hash. Received AuthName used to lookup Passwd in local db.
> md5 hash is mix of (PacketID + RandomValue + Passwd). Sent it back.
> 3) R4 make the same calculation. To find Passwd is used RemoteName from R5.
> Compare received MD5-hash and local MD5-hash.
> 4) Send Accept/Reject to calling party.
>
> On Friday 29 September 2006 14:40, Radoslav Vasilev wrote:
> > Hi Group,
> >
> > Simple question regarding PPP CHAP authentication - is it possible
> > with CHAP to have different passwords confugured on the two routers,
> > for exampe:
> >
> > router 4:
> >
> > username ROUTER5 password CISCO5
> > int se0/1
> > encap ppp
> > ip address ...
> > ppp chap authentication
> >
> >
> >
> > router 5:
> > username ROUTER4 password CISCO4
> > int se 0/1
> > encap ppp
> > ip address ...
> > ppp chap authentication
> >
> >
> >
> > I thought that wasn't possible but I see a similar solution for the
> > task mentioned in the subject. I'm reffering to the alternative
> > solution for that task.
> >
> > Thanks!
> > Rado
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
> --
> Ivan



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