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New threats are made known in the network because of SDN and network functions virtualization in mobile networks. Thus to tackle these issues centralized monitoring, SDN programmability and traffic filtering capability are applied on the end user and mobile networks. For a programmable SDN enabled network, if attacker gains unauthorized access to the SDN controller the network can be exploited. The attacker injects  malignant traffic to the network which corrupt  network services. To identify such attacks intrusion detection systems (IDS)were used, but they weren’t that effective. Hence a scalable redundant reliable architecture was  made known. Thisarchitecture combines dynamicity and programmability of SDN ,traffic filtering capabilities of IDS and clustering mechanism for load balancing.  ASA safeguards SDN from overloading and from resource abuse attack The ASA for future aircraft communications is applied in a satellite system architecture with SecMan module  with alternatives to define security policies. Over and above  ranks among the supported security mechanisms are set up by SecMan,  by  to choose  the finest security policy for the connection request.  The software architecture on mobile devices with adaptive security of network protocols was developed.This architecture is implemented on android platform and is  able to trade off between security levels and power consumption . The architecture  let the network interface to stay in low power mode for a longer period by blocking the packets and sending them in burst mode.Three different levels of security with their ciper suites were proposed : low , medium and high. High has the highest security level and highest power consumption, while medium has medium security level and average power consumption and low has low security level and lowest power consumption

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