Trust-Based Countermeasures for Securing OLSR Protocol

In this paper, we present two measures to counter attacks against OLSR: prevention that solves some protocol´s vulnerabilities, and countermeasures that treat misbehavior and inconsistency concerned by the vulnerabilities that have not been solved with prevention measures. The resulting mechanisms allow to resolve the OLSR vulnerabilities which are due to the easy usurpation of node´s identity, and the lack of links verification at the neighborhood discovery. However, these mechanisms do not resolve other vulnerabilities, such as the lack of monitoring of the establishment of the routing tables. Thus, when other vulnerabilities are exploited and an attack is detected, we propose countermeasures to isolate malicious nodes.