Mobile IPv6 A.01.01 Release Notes

HP-UX Mobile IPv6 A.01.01 Release Notes
What Is Included in HP-UX Mobile IPv6 A.01.01?
Chapter8
Route Optimization
In most cases, the Mobile Node and Correspondent Node communicate using Route
Optimization, which improves data transmission rates between the two nodes. With Route
Optimization, the Mobile Node and Correspondent Node communicate directly with each
other and bypass the Home Agent. The Correspondent Node sends packets directly to the
Mobile Node’s Care-of Address, and the Mobile Node sends packets directly to the
Correspondent Node.
Return Routability Procedure
The return routability procedure provides reasonable proof to the Correspondent Node that it
can contact the Mobile Node through both the Home and Care-of Addresses; thereby,
protecting the Correspondent Node from attackers that send false Binding Update messages.
In this procedure, the Mobile Node exchanges messages with the Correspondent Node using
both the Mobile Node’s Home and Care-of Addresses and builds a shared key. The Mobile
Node uses this shared key to attach a cryptographic signature to the Binding Update
message, which the Correspondent Node authenticates to obtain the proof.
Dynamic Home Agent Address Discovery
With Dynamic Home Agent Address Discovery, a Mobile Node only needs a home network
prefix configured and it can dynamically find the address of a Home Agent on its home
network when it needs to register its Care-of Address.
Prefix Discovery
Prefix Discovery allows a Mobile Node to get network prefix information about its Home
Network and to configure its Home Address if needed. The Home Agent monitors prefix
information from Router Advertisement messages on the Home Network. The Mobile Node
can request prefix information by sending a Mobile Prefix Solicitation message to the Home
Agent.
IPsec/IKE Dynamic Keying Support
Dynamic keying uses the Internet Key Exchange (IKE) v1 protocol to ensure that
pre-configured static keys are not exposed for long periods of time. IPSec can provide
anti-replay protection only if dynamic keying is used. HP-UX Internet Protocol Security
(IPSec) version A.02.01 and Transport Optional Upgrade Release (TOUR) 3.0 are required for
dynamic keying support with HP-UX Mobile IPv6. For more information on dynamic keying,
refer to Installing and Administering HP-UX IPSec at
http://docs.hp.com/en/J4256-90001/J4256-90001.pdf.