Ad hoc network allow nodes to communicate beyond their direct wireless transmission range by introducing cooperation in mobile computer (nodes). Many proposed routing protocol for ad hoc network operate in an ad hoc fashion, as on demand routing protocol often have low overhead and faster reaction time than other type of routing based on periodic protocol. However variety of attacks targeting routing protocol have been identified. By attacking the routing protocol attacker can absorb network traffic, inject them in the path between source and destination and can thus control network traffic. So many secure routing protocols have been developed that deals with these attacks. This paper analyzes the security aspects of one commonly used secure routing protocol ARAN.