iot | 易学教程

该怎样应对IoT和边缘计算安全挑战

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导读虽然智能家居的响应延迟似乎不是大问题，但如果自动驾驶汽车需要刹车，而数据出现延迟或者被***拦截或操纵，这可能造成灾难性后果。这里将需要边缘计算安全。边缘计算可在靠近远程设备的位置提供计算、存储和网络连接资源，远程设备会生成数据，需要本地分析、存储或几乎即时的传输。边缘计算可带来很多好处，例如，缓存流化内容到离客户更近的地方，可以加快交付速度并改善整体用户体验。虽然智能家居的响应延迟似乎不是大问题，但如果自动驾驶汽车需要刹车，而数据出现延迟或者被***拦截或操纵，这可能造成灾难性后果。这里将需要边缘计算安全。该怎样应对IoT和边缘计算安全挑战该怎样应对IoT和边缘计算安全挑战边缘计算与数据中心在这些假设情况中，我们需要采取措施来阻止可预防的事故。其中一种方法是将数据的初始处理和分析移至网络边缘，这可以减少延迟和带宽，同时提高性能和效率，并且，与将数据发送到远程集中式数据中心相比，这是更好的做法。因为缩短数据传输距离，可降低***在传输过程中拦截数据的可能性。随着更多数据保留在网络边缘，也使中央服务器成网络***不太具吸引力的目标。数据中心被认为是相当安全的，部分原因在于对数据中心的物理访问受到限制。这与物联网传感器和监控器等设备形成鲜明对比，这些设备非常遥远或者难以监控。跨广泛端点部署生成数据的IoT设备，会带来网络可见性和控制问题。另外，远程端点还可能被**

Unable to communicate to device with .local domain using android, corova-zeroconf-plugin

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问题 I am having an iot device which is advertising in my network with name iotdevice.local, i am able to send http requests to this domain in my windows pc after installing Bonjour. But i am developing an ionic app from which i'll be communicating frequently with this device. So i am using cordova-zeroconf-plugin. (https://www.npmjs.com/package/cordova-plugin-zeroconf). I am seeing the services when i add watch for .local services. but my requestis faield when i use iotdevice.local in $http

Unable to communicate to device with .local domain using android, corova-zeroconf-plugin

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WSO2 IOTserver: multiple errors during startup, cannot register android API's

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问题 I'm trying to start WSO2 IoT server 3.3.0 on VM running Windows 10, jdk 8.0.191. During startup I have multiple errors on almost every android API. Errors like that: [2018-12-11 15:11:27,156] [IoT-Core] ERROR - {org.wso2.carbon.apimgt.rest.api.publisher.impl.ApisApiServiceImpl} Error while adding new API : admin-Windows Binary Security Token Service-1.0.0 - Scope 'perm:windows:enroll' is already used by another API. org.wso2.carbon.apimgt.api.APIManagementException: Scope 'perm:windows:enroll

IBM Bluemix disconnecting the MqttAndroidClient after sometime

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问题 I am working on CC2650 sensortag and Bluemix(using IOT starter boilerplate) as a cloud solution. The cc2650 android app uses MqttAndroidClient to connect to MQTT server provided by bluemix. The problem I am facing after sometime (around 7 mins) it get timedout. Following exception is visible on the android studio console d:2f7tpk:ti-sensortag2:B0B448C07886: Timed out as no activity, keepAlive=240,000 lastOutboundActivity=1,463,309,545,312 lastInboundActivity=1,463,309,275,609 time=1,463,309

Fiware: can not start cygnus as service

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问题 I installed cygnus using RPMs on fiware image CentOS-7-x64 and I can't start it as a service, Here is my logs: [centos@cygnus-mongo conf]$ sudo service cygnus start Starting cygnus (via systemctl): Job for cygnus.service failed. See 'systemctl status cygnus.service' and 'journalctl -xn' for details. [FAILED] [centos@cygnus-mongo conf]$ sudo journalctl -xn -- Logs begin at mer. 2015-10-07 07:48:29 UTC, end at mer. 2015-10-07 10:02:35 UTC. -- oct. 07 10:02:20 cygnus-mongo.novalocal su[5700]:

published message store by mosquitto broker when subscriber is offline with QOS=2

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问题 My both publisher and subscriber are both connected to mosquitto (paho) broker with QOS=2 and maintaining persistent session by clean_session=false. When i publish message with subscriber connected to broker, it successfully received by subscriber, now if I disconnect the subscriber , then again publish message and connect subscriber after, I will be able to retrieve message those messages when my subscriber was offline. My question is -- Is there any storage in the broker which stores all

Sending and receiving images via a socket

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问题 I have a C# desktop app. It connects to another PC on my network which is a UWP C# app. I am trying to send an image or 2 to my listening socket and to test this I get the listening socket to send me the image back. The trouble is that even though my server recieves all the bytes that were orginally sent the recieved image back to the client is not of the same size. To make this even more weird is sometimes the returned bytes are correct and I get the whole image and when I attempt to send 2

IoT测试

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当被问及到"什么是生活中必需的？"大多数人会回答道："食物，住房，衣服。"但是在一个世纪以前人们的需求就是这样，人类已经进化演变到，让我们的生活必需品的需求尽量简化，便捷。我们已经停止使用开关来控制灯光，停止在售货亭支付收取费用，我们一直在开发使用智能设备来监控我们的生活，想要更有效地让所发明出的智能设备服务于我们。　　我们是怎么做到了这一点的呢？　　那么我们首先应该对此有个了解，接着再来学习怎么测试他们。　　什么是物联网（IoT）？　　IoT是将各种信息传感设备，如射频识别装置、红外感应器、全球定位系统、激光扫描器等种种装置与互联网结合起来而形成的一个巨大网络。其目的是让所有的物品都与网络连接在一起，方便识别和管理。　　IoT示例　　物联网在现实生活中的一些例子如下：　　#1)可穿戴技术：　　例如像Fitbit bands和Apple watches这种小的电子产品能够轻松与移动设备进行同步。　　这些电子产品能够获取到心率、睡眠质量等保障健康水平的必要信息。还可以将这些信息发送到移动设备显示出来。　　 #2）基础设施与开发：　　通过使用CitySense等应用，更容易获得户外照明的实时数据，并且基于这些数据，设置路灯的打开或关闭。还有各种诸如此类的应用，以便在复杂的城市布局中控制交通信号或停车有效管理。　　#3) 医疗保健：　

Google iot core connection status

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问题 I am using Google IOT core with mongoose os. I wanted to update device connection status to firestore. But i am unable to find event which reports mqtt connection status to pub/sub like when device disconnects or reconnect i.e if device is offline or not. I am stuck on this problem for days.Any help will be appreciated 回答1: Update As @devunwired mentioned in this response it is now possible to monitor Stackdriver logs for disconnect events. You must have at a minimum enabled INFO level

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