HP-UX Mobile IPv4 A.03.01 Administrator's Guide

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Glossary
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miprod The HP-UX Mobile IPv4 daemon that
provides Route Optimization services on a
Correspondent Node.
MN See Mobile Node.
Mobile Node A host that may change its network
attachment point from one network or subnetwork
to another. A Mobile Node is assigned a fixed home
address on a home network, which Correspondent
Nodes may use to address packets to the Mobile
Node, regardless of the Mobile Node’s current
network attachment point.
Mobility agent Either a Home Agent or a Foreign
Agent.
NAI See Network Access Identifier.
NAI An identifier used to specify a network user or
entity, usually in the form user@domain.
Mobility Binding The triplet of numbers that
associates a Mobile Node's home address with its
Care-of Address and registration lifetime.
Registration The process by which the Mobile
Node informs the Home Agent of its current Care-of
Address.
Registration lifetime How long the mobility
agents may use a mobility binding.
Replay attacks A security violation whereby a
malicious third entity attempts to imitate a
transaction recorded during a previous and valid
transaction between two protocol entities. Both
protocol entities have to be aware that the
subsequent identical traffic streams may no longer
be valid. Since the previous transaction was valid,
the algorithms for detecting replay attacks need to
incorporate data that can never be reproduced in
any correct subsequent transaction.
Reverse tunneling Tunneling for the return data
path from the Mobile Node to the Correspondent
Node. The tunnel has the Care-of Address as the
source endpoint and the Home Agent as the
destination endpoint. Without reverse tunneling, the
Mobile Node sends packets directly back to the
Correspondent Node’s address.
Route optimization The Correspondent Node
forms a tunnel with the Mobile Node’s Care-of
Address so that packets from the Correspondent
Node to the Mobile Node bypass the Home Agent.
Security Association An association between two
nodes that specifies security parameters, including
cryptography algorithm, crytography key and
expiration time.
Security Parameters Index An index identifying
a security association between two nodes.
SPI See Security Parameters Index.
Tunnel The path followed by an IP packet when it
is encapsulated in a second IP packet with an
alternate IP destination addresses. While it is
encapsulated, the internal datagram is protected
from normal Internet routing. The decapsulating
agent decapsulates the original datagram and so it
can be delivered to the original destination address.
Visited Network A network other than a Mobile
Node's home network, to which the Mobile Node is
currently connected.
Visitor List A list of Mobile Nodes visiting a
Foreign Agent.