Problems with Mobile IP
n Security
authentication with FA problematic, for the FA typically belongs to
another organization
no protocol for key management and key distribution has been
standardized in the Internet
patent and export restrictions
n Firewalls
typically mobile IP cannot be used together with firewalls, special set-ups
are needed (such as reverse tunneling)
n QoS
many new reservations in case of RSVP
tunneling makes it hard to give a flow of packets a special treatment
needed for the QoS
n Security, firewalls, QoS etc. are topics of current research and
discussions!