[pisa-src] r2426 - docs/protocol_spec/application.tex
- From: Hanno Wirtz <Hanno.Wirtz@xxxxxxxxxxxxxxxxxxxxx>
- To: pisa-src@xxxxxxxxxxxxx
- Date: Wed, 26 Jan 2011 18:21:57 +0100
Author: wirtz
Date: Wed Jan 26 18:21:56 2011
New Revision: 2426
Log:
roles definitions
Modified:
docs/protocol_spec/application.tex
Modified: docs/protocol_spec/application.tex
==============================================================================
--- docs/protocol_spec/application.tex Wed Jan 26 14:44:58 2011 (r2425)
+++ docs/protocol_spec/application.tex Wed Jan 26 18:21:56 2011 (r2426)
@@ -49,7 +49,7 @@
\pagestyle{plain}
\begin{center}
-{\large PISA Protocol Specification }\\[1em]
+{\large PISA Protocol Specification}\\[1em]
\end{center}
\section{Scenario Description}
@@ -109,9 +109,23 @@
Once the client associates with a new access point, this access point needs to
update its NAT mappings, establish tunnels to the services the clients talks to
and, by sending a data packet or signaling packet, update the NAT mapping of
the communication endpoint.
-\item[Service relay]
+\item[Service gateway]
+
+A service gateway allows for private networks and services to be included in
the PISA network with only one gateway device that maps the PISA network
traffic to traffic and endpoints in the private network.
+Examples for usage scenarios are the inclusion of existing services in
networks run by companies, the municipality or the university.
+Traffic towards the service gateway is tunneled through HIP/IPsec and PISA and
is "unwrapped" there.
+Between the service gateway and the service (network) a private IP assignment
scheme and routing is used, traffic characteristics depend on the internal
network structure and design.
+The gateway handles NAT mappings and tunnel establishment between services and
communication endpoints in the PISA network.
+
+\item[Trustpoint/Relay]
+
+A trustpoint serves as the relay to the Internet for \emph{native clients}.
+Traffic that is generated by a native client and is intended for the Internet
rather than for an endpoint in the PISA network needs to go through this
trustpoint.
+To this end, a native client's default route (for destinations outside the
PISA address space) points to the trustpoint, which is either his own access
point at home or
+a trustpoint of/for a number of users provided by a company or university.
+At the trustpoint, this traffic is "unwrapped" and forwarded over the users
own Internet connection to its original destination.
+
-\item[Trustpoint]
\item[Legacy router]
--
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- » [pisa-src] r2426 - docs/protocol_spec/application.tex - Hanno Wirtz
