With the fast development of wireless networks and devices, Mobile
IP is expected to be used widely so that mobile users can access
the Internet anywhere, anytime without interruption. However, some
problems, such as firewall traversal and use of private IP
addresses, restrict use of Mobile IP. The objective of this thesis
is to design original schemes that can enable a mobile node at
abroad to access its home network as well as the Internet securely
and that can help Mobile IP to be used widely and commercially.
Our solutions are secure, efficient, and scalable. They can be
implemented and maintained easily. In this thesis, we mainly
consider Mobile IPv4, instead of Mobile IPv6. Three research
topics are discussed. In each topic, the challenges are
investigated and the new solutions are presented.
The first research topic solves the firewall traversal problems in
Mobile IP. A mobile node cannot access its firewall-protected home
network if it fails the authentication by the firewall. We propose
that an IPsec tunnel be established between the firewall and the
foreign agent for firewall traversal and that an IPsec transport
security association be shared by the mobile node and a
correspondent node for end-to-end security.
The second topic researches further on firewall traversal problems
and investigates the way of establishing security associations
among network entities. A new security model and a new key
distribution method are developed. With the help of the security
model and keys, the firewall and the relevant network entities set
up IPsec security associations to achieve firewall traversal.
A mobile node from a private home network cannot communicate with
other hosts with its private home address when it is visiting a
public foreign network. A novel and useful solution is presented
in the third research topic. We suggest that the mobile node use
its Network Access Identifier (NAI) as its identification and
obtain a public home address from its home agent. In addition, a
new tunnel between the mobile node and its home agent is proposed.
| Identifer | oai:union.ndltd.org:GATECH/oai:smartech.gatech.edu:1853/11536 |
| Date | 29 June 2006 |
| Creators | Tang, Jin |
| Publisher | Georgia Institute of Technology |
| Source Sets | Georgia Tech Electronic Thesis and Dissertation Archive |
| Language | en_US |
| Detected Language | English |
| Type | Dissertation |
| Format | 1787315 bytes, application/pdf |
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