Realm-Specific IP was an experimental
IETF
The Internet Engineering Task Force (IETF) is a standards organization for the Internet and is responsible for the technical standards that make up the Internet protocol suite (TCP/IP). It has no formal membership roster or requirements and a ...
framework and protocol intended as an alternative to
network address translation (NAT) in which the end-to-end integrity of packets is maintained.
RSIP lets a host borrow one or more
IP address
An Internet Protocol address (IP address) is a numerical label such as that is connected to a computer network that uses the Internet Protocol for communication.. Updated by . An IP address serves two main functions: network interface ident ...
es (and UDP/TCP port) from one or more RSIP gateways, by leasing (usually public) IP addresses and ports to RSIP hosts located in other (usually private) addressing realms.
The RSIP client requests registration with an RSIP gateway. The gateway in turn delivers either a unique IP address or a shared IP address and a unique set of TCP/UDP ports and associates the RSIP host address to this address. The RSIP host uses this address to send packets to destinations in the other realm. The tunnelled packets between RSIP host and gateway contain both addresses, and the RSIP gateway strips off the host address header and sends the packet to the destination.
RSIP can also be used to relay traffic between several different privately addressed networks by leasing several different addresses to reach different destination networks.
RSIP should be useful for
NAT traversal
Network address translation traversal is a computer networking technique of establishing and maintaining Internet protocol connections across gateways that implement network address translation (NAT).
NAT traversal techniques are required for m ...
as an IETF standard alternative to
Universal Plug and Play
Universal Plug and Play (UPnP) is a set of networking protocols that permits networked devices, such as personal computers, printers, Internet gateways, Wi-Fi access points and mobile devices to seamlessly discover each other's presence on the n ...
(UPnP).
, the protocol was in the experimental stage and not yet in widespread use.
See also
*
Interactive Connectivity Establishment
Interactive Connectivity Establishment (ICE) is a technique used in computer networking to find ways for two computers to talk to each other as directly as possible in peer-to-peer networking. This is most commonly used for interactive media such a ...
(ICE)
*
Middlebox
A middlebox is a computer networking device that transforms, inspects, filters, and manipulates traffic for purposes other than packet forwarding. Examples of middleboxes include firewalls, network address translators (NATs), load balancers, and ...
Middlebox Communications (MIDCOM)
*
Simple Traversal of UDP over NATs (STUN)
*
SOCKS
A sock is a piece of clothing worn on the feet and often covering the ankle or some part of the calf. Some types of shoes or boots are typically worn over socks. In ancient times, socks were made from leather or matted animal hair. In the late ...
*
Traversal Using Relay NAT
Traversal Using Relays around NAT (TURN) is a protocol that assists in traversal of network address translators (NAT) or firewalls for multimedia applications. It may be used with the Transmission Control Protocol (TCP) and User Datagram Protocol ...
(TURN)
*
Universal Plug and Play
Universal Plug and Play (UPnP) is a set of networking protocols that permits networked devices, such as personal computers, printers, Internet gateways, Wi-Fi access points and mobile devices to seamlessly discover each other's presence on the n ...
(UPnP)
IETF References
* - Realm Specific IP: Framework
* - Realm Specific IP: Protocol Specification
* - RSIP Support for End-to-end IPsec
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Internet protocols