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Title : NAT and Firewall Traversal Issues of Host Identity Protocol (HIP) Communication
Author(s) : M. Stiemerling, et al.
Filename : draft-irtf-hiprg-nat-04.txt
Pages : 13
Date : 2007-3-7
The Host Identity Protocol (HIP) changes the way in which two
Internet hosts communicate. One key advantage over other schemes is
that HIP does not require modifications to the traditional network-
layer functionality of the Internet, i.e., its routers. In the
current Internet, however, many devices other than routers modify the
traditional network-layer behavior of the Internet. These
"middleboxes" are intermediary devices that perform functions other
than the standard functions of an IP router on the datagram path
between source and destination hosts. Whereas some types of
middleboxes may not interfere with HIP at all, others can affect some
aspects of HIP communication and others can render HIP communication
impossible. This document discusses the problems associated with HIP
communication across network paths that include specific types of
middleboxes, namely, network address translators and firewalls. It
identifies and discusses issues in the current HIP specifications
that affect communication across these types of middleboxes. This
document is a product of the IRTF HIP Research Group.
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