From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Fri Dec 15 2006 - 16:26:26 ART
I should have added other than what's on the DocCD.
Brian Dennis, CCIE4 #2210 (R&S/ISP-Dial/Security/SP)
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: Brian Dennis
Sent: Friday, December 15, 2006 11:26 AM
To: 'koury@london.com'; ccielab@groupstudy.com
Subject: RE: RE: Re: no ip gratuitous-arp
Where are you getting this information regarding PPP and gratuitous ARP?
Brian Dennis, CCIE4 #2210 (R&S/ISP-Dial/Security/SP)
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
koury@london.com
Sent: Friday, December 15, 2006 11:14 AM
To: ccielab@groupstudy.com
Subject: Re: RE: Re: no ip gratuitous-arp
Thanks, Brian!
But as I has written previously I have the following doubts:
"
Thanks Muhammad for your immediate reply!!!
I still have some doubts about how this feature.
1) The Cisco routers only send gARP in this situations (sending out IP
address over a PPP connection)?
2) I don't understand how this vulnerability (send gARP over ppp
connection)
can be exploited or can't be after disabled the feature. If the router
(after
disabled gARP) still received (not send out) gARP, this device still
don't
continue vulnerable to fake rARPs from a attacker?
Thanks!
Koury
"
Can you help me?
Thanks!
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