A survey on Iot security: Application Areas, Security Threats, and Solution Architectures
D. SOLUTIONS PROVIDED BY FOG COMPUTING TO
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| D. SOLUTIONS PROVIDED BY FOG COMPUTING TO
OVERCOME IOT SECURITY THREATS In regard to the attacks discussed in Section III, the solution that fog computing provides or can provide to overcome those security threats are discussed below. 1. Man-in-the-middle attack: Fog acts as a security layer between end-user and cloud or IoT system. All threats or attacks on the IoT systems need to pass through the fog layer in between, and this layer can identify and mitigate unusual activities before they are passed to the system. 2. Data transit attacks: Data storage and management is much better if performed on the secure fog nodes, as compared to the IoT devices. Data will be better protected if it is stored on the fog nodes as compared to storing the data on the end-user devices. Fog nodes also help in making the user data more available. 3. Eavesdropping: Using fog nodes, the communication takes place between the end-user and the fog node only, rather than routing the information through the entire network. The chances of an adversary trying to eavesdrop reduces a lot because the traffic on the network is reduced. 4. Resource-constraint issues: Most of the IoT devices are resource constrained and the attackers take advan- tage of this fact. They try to damage the edge devices and use them as the weak links to enter the system. Fog 14 VOLUME x, 2019 This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/. This article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication. Citation information: DOI 10.1109/ACCESS.2019.2924045, IEEE Access Vikas Hassija et al.: A Survey on IoT Security: Application Areas, Security Threats, and Solution Architectures TABLE 5: Characteristics and Solutions provided by Fog Computing Characterstics Solutions Provided By Fog Decentralization Verifiable computation [128]–[130] Server-aided exchange [131], [132] Big data analytics [133]–[137] Data dissemination Designing protocol [138] Sharing data securely [139]–[143] Searching data securely [144], [145] Real-time services Identity recognition [146]–[151] Access management [152], [153] Intrusion detection [154]–[159] Transient storage Recovery from attacks [160] Data distribution [161] Identifying and protecting sensitive data [162] nodes can support the edge devices and can prevent them from being affected by such attacks. A nearby fog node can perform the more sophisticated security functions necessary for protection. 5. Incident response services: Fog nodes can be pro- grammed to provide real-time incident response ser- vices. Fog nodes can generate a flag to the IoT system or the end users as soon as they encounter a suspicious data or request. Fog computing allows for malware detection and problem resolution in transit. In many critical appliations, it might not be possible to stop the entire system to resolve malware incidences. Fog nodes can help in such resolutions while the system is up and running. tải về 6.16 Mb. Chia sẻ với bạn bè của bạn:
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