RE: PPP auth chap callin

From: wing_lam@jossynergy.com
Date: Wed Oct 06 2004 - 00:29:17 GMT-3

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Hi Brian,

For callback option, does it only effective in router which initiates the
callback or the router being callbacked?

For example router A initiates call to B and B callback A scenario, what
part of q931 communication will be authenticated if callback option is
placed in router A or router B?

Thanks alot,
BBD

                                                                                                                                           
                      "Brian Dennis"
                      <bdennis@internetwork To: "Oliver Grenham" <ogrenham@optusnet.com.au>, <ccielab@groupstudy.com>
                      expert.com> cc:
                      Sent by: Subject: RE: PPP auth chap callin
                      nobody@groupstudy.com
                                                                                                                                           
                                                                                                                                           
                      10/06/2004 12:21 AM
                      Please respond to
                      "Brian Dennis"
                                                                                                                                           
                                                                                                                                           

Oliver,
             The "callout" option would have the local router authenticate
the remote device when the call is treated as outbound. It is one of
the more unusual options to see used in the real world.

ppp authentication chap

             Authenticate remote on callback
             Authenticate remote on incoming call
             Authenticate remote on outgoing call

ppp authentication chap callin

             Authenticate remote on incoming call only

ppp authentication chap callout

             Authenticate remote on outgoing call only

ppp authentication chap callback

             Authenticate remote on callback only

Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com

Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Oliver Grenham
Sent: Tuesday, October 05, 2004 8:18 AM
To: ccielab@groupstudy.com
Subject: PPP auth chap callin

Hi Group,

I have a question regarding the above command. If say Im On Router A and
I
call an ISP router routerB with the above command on a DDR interface
then my
router router A will not challenge the ISP's router using CHAP. If this
is
true (its only my understanding) then where would one use the command
"ppp
auth chap callout"

any advise would be greatly appreciated.

Ollie.

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