There are different ways to perform IP based DoS Attacks. The most common IP based DoS attack is that an attacker sends an extensive amount of connection establishment （71）(e.g. TCP SYN requests) to establish hanging connections with the controller or a DPS. Such a way, the attacker can consume the network resources which should be available for legitimate users. In other （72）, the attacker inserts a large amount of （73）packets to the data plane by spoofing all or part of the header fields with random values. These incoming packets will trigger table-misses and send lots of packet-in flow request messages to the network controller to saturate the controller resources. In some cases, an （74）who gains access to DPS can artificially generate lots of random packet-in flow request messages to saturate the control channel and the controller resources. Moreover, the lack of diversity among DPSs fuels fuels the fast propagation of such attacks. Legacy mobile backhaul devices are inherently protected against the propagation of attacks due to complex and vendor specific equipment. Moreover, legacy backhaul devices do not require frequent communication with core control devices in a manner similar to DPSs communicating with the centralized controller. These features minimize both the impact and propagation of DoS attacks. Moreover, the legacy backhaul devices are controlled as a joint effort of multiple network element. For instance, a single Long Term Evilution（LTE）eNodeB is connected up to 32 MMEs. Therefore, DoS/DDoS attack on a single core element will not terminate the entire operation of a backhaul device（75）the network.
LTE（Long Term Evolution，长期演进）是由3GPP（The 3rd Generation Partnership Project，第三代合作伙伴计划）组织制定的UMTS（Universal Mobile Telecommunications System，通用移动通信系统）技术标准的长期演进，于2004年12月在3GPP多伦多TSG RAN#26会议上正式立项并启动。LTE尽管被宣传为4G无线标准，但它其实并未被3GPP认可为国际电信联盟所描述的下一代无线通信标准，因此在严格意义上其还未达到4G的标准。只有升级版的LTE Advanced才满足国际电信联盟对4G的要求。
LTE系统引入了OFDM（Orthogonal Frequency Division Multiplexing，正交频分复用）和MIMC（Multi-Input&Multi-Output，多输入、多输出）等关键传输技术，显著增加了频谱效率和数据传输速率（20M带宽2×2 MIMO在64QAM情况下，理论下行最大传输速率为201Mb/s，除去信令开销后大概为140Mb/s，但根据实际组网以及终端能力的限制，一般认为下行峰值速率为100Mb/s，上行为50Mb/s），并支持多种带宽分配，如1.4MHz、3MHz、5MHz、10MHz、15MHz和20MHz等，且支持全球主流2G、3G频段和一些新增频段，因此其频谱分配更加灵活，系统容量和覆盖也得到了显著提升。
