OSPF, Open Shortest Path First, is an Intra-gateway routing protocolfirst developed as an IETF effort. It is widely adopted in largeenterprise-scale networks, being well regarded for its fastconvergence and loop-free routing. It is versatile in terms of whichinterface types it supports, such as point-to-point links or broadcast networks. It also offers scalability through hierarchical routing and by usingcentralization to reduce the amount of overhead on networks which havebroadcast or broadcast-similar properties. An interface type missingfrom the standard so far is that of a wireless network, characterizedby non-guaranteed bidirectional links combined with unreliablebroadcasting, and existing interface types generally perform poorlyunder these networks. The IETF has therefore instituted a Working Group tostandardize such an interface type extension to the latest version,OSPF version 3. This interface type will permit mobility andmulti-hop characteristics in addition to those of wireless links ingeneral. Such networks are usually referred to as MobileAd-hoc Networks (MANET). MANET routing protocols are subject to moresevere security issues than ordinary, wireline-oriented protocolsare. This thesis aims to indentify key security aspects of OSPF as aMANET routing protocol.