The security architecture of the Internet Protocol known as IP Security (IPsec) is the most advanced effort in the standardization of Internet security. IPsec provides secure communication between two IP nodes, called IPsec peers. These types of communications are essentially sets of Security Associations (SAs) and define which protocol should be applied to packets. To implement IPsec cooperation with key management protocol- either manual or automated-, it is required prior to the security association management tool and database(SADB). This paper proposes the design and implementation of SA management method oriented to IP security.