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Reputation Management for multi-operator Wireless Mesh Networks (WMNs)

Reputation Management for multi-operator Wireless Mesh Networks (WMNs)

WMNs consist of a wireless infrastructure of Mesh Routers (MRs) which are connected to the Internet via Mesh Gateways (MGs). Some (or all of these) MRs act as Network Access Server (NAS) to Mesh Clients (MCs). MCs connected to a WMN can communicate with other MCs on the same WMN or any other node on the Internet. In addition, MCs may also act as MRs.


WMNs are often considered to be operated by a single operator that owns the infrastructure nodes and offers connectivity to MCs that registered with them directly. There are, however, a variety of applications that profit from or even require multi-operator support. For instance a MC is not only able to use the WMN operated by his home operator, i.e., the operator it registered with, but also the WMN of any other Foreign Operator (FO) that has a roaming agreement with its Home Operator (HO). In addition, there are application scenarios in which the infrastructure nodes, i.e., the MRs and MGs, forming the WMN are operated by different operators. An examples for such applications are building automation using WMN technology or community networks in which users contribute their own network equipment.

Many applications such as Intrusion Detection Systems, handover decisions, or access point fingerprinting could profit by incorporating a reputation system. For instance, devices submitting intrusion reports could be considered differently based on the device’s reputation. Also, prior to connecting to the WMN, clients or routers could decide whether to connect to a specific device based on its reputation. Of course also other services such as routing protocols could profit from knowing the reputation of certain nodes.

Goals: The goal of this thesis is to develop a reputation system for multi-operator WMNs. Practical implementation should be done in a prototypical fashion, but also on our WMN testbed at the UMIC building. There are many interesting aspects to explore, e.g., architectural design, reputation algorithms, reliable data sources to build the reputation, or managing of different administrative domains of WMN devices.

Contact: André Egners (egners at itsec.rwth-aachen.de)