#FIRST AID 2017 PDF SDN UPDATE#

#FIRST AID 2017 PDF SDN UPDATE#

The dynamic nature of control makes it necessary to update the preset node-privilege correspondence frequently, which makes the traditional access control model difficult to meet the needs of fine-grained control and dynamic adjustment of access privileges in SDN environment. Traditional access control models for enclosed environments, such as DAC (Discretionary Access Control), MAC (Mandatory Access Control), RBAC (Role-Based Access Control), require preset node-privilege correspondence and SDN access. Therefore, SDN-oriented access control mechanism needs to solve dynamic problems such as timely update of access nodes and active adjustment of access rights. At the same time, the node may access and exit continuously, reflecting a strong dynamic. In the process of SDN application, the network node may move continuously, and the access data object may change in real time. Access control mechanism can ensure that network resources are not illegally used and accessed. In order to ensure the security of SDN nodes in the process of accessing resources, it is necessary to implement effective access control. With the rapid development of Internet services, SDN is now widely used in large mobile network. Software-defined network SDN is designed to effectively solve the problems of complex structure of traditional network forwarding unit and inefficient network management.

First aid 2017 pdf sdn