Subject: Re: [MOBILE-IP] RFC2002bis

From: "Karim El-Malki (ERA)" <[email-masked]>
Date: Thu, 13 Jan 2000 19:54:00 +0100

>  > When the MN moves, say it does a smooth handoff such that
>  the "old" FA
>  > is notified. Could that trigger the "old" FA to clean up
>  the arp problem
>  > with a gratuitous arp?
>
>  I think so. But this requires a security association between
>  'old' FA and
>  whoever is sending the notification (HA, new FA) to it.
>  Otherwise one can launch
>  DoS attacks.

Regarding security, the Previous Foreign Agent Notification
extension (used in smooth handoff) is authenticated.

Rgds
/Karim