REGIONAL COLLEGE FOR EDUCATION RESEARCH & TECHNOLOGY

→ Public networks Public network are those network which are connected via router thereby from the internet. → Private Networks Private network are those network which are connected via NAT or Firewall thereby Internet.

→ Mobile IP originally developed Helsinki University of Technology (HUT) for Linux operating system. → Mobile IP is designed by IETF.

→ Operational Transparency → Performance Transparency → Backward compatibility → Infrastructure required → Small Additional Address → Security

→ Sony MHP → Columbia MHP → IBM I MHP → IBM II MHP

Mobile IP Operation → Sending and Receiving Packets → Discovering the care-of Address → Registering the care-of address → Tunneling to the care-of address →Deregistering the care-of address

VersionIHLType of service Total length IdentificationFlagFragment Offset TTL(home Count)ProtocolChecksum Header Destination Address OptionsPadding IP Header IP Payload Old IP Header IP Payload New IP Header Source Address

→ The Foreign Agent entity in visited network that performs mobility functions on behalf of mobile. → The Home Agent entity that will perform mobility functions on behalf of mobile, when mobile is remote. Roles of Mobile IP

Triangular Routing Routing in Mobile IP CN Global Internet Home Network Visited Network Home Agent Foreign Agent Mobile Node Corresponding Node

Reverse Routing Routing in Mobile IP CN Global Internet Home Network Visited Network Home Agent Foreign Agent Mobile Node Corresponding Node

Bogus registration Security Evil Thing Registration Request Send Packet To ME

Replay Attack Security digest