Source And Destination Ports

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall in order to make your system into a fortress, you should close these ports, mainly: TCP 135, 139 , 445, 593, 1025 ports and UDP 135, 137, 138, 445 ports, some popular virus backdoor ports (such as TCP 2745, 3127, 6 ...)

Exchange (switching) is the need to transmit information at both ends of communication, using manual or equipment automatic completion method, the information to be transmitted to meet the requirements of the corresponding routing of the technology collectively. 　　A generalized switch is a device that completes the information exchange function in a communication system. In http://www.aliyun.com/zixun/aggregation/11991.html "> Computer network System, the concept of exchange is proposed for the improvement of shared working mode.

Microsoft http://www.aliyun.com/zixun/aggregation/13357.html ">azure provides load-balancing services for virtual machines (IaaS) and cloud Services (PaaS) hosted in them. Load balancing supports application scaling and provides application recovery and other benefits. Load Balancing services can be accessed through the service model of the Microsoft Azure portal or application ...

Before the formal introduction, it is necessary to first understand the kubernetes of several core concepts and their assumed functions. The following is the kubernetes architectural design diagram: 1. Pods in the kubernetes system, the smallest particle of dispatch is not a simple container, but an abstraction into a pod,pod is a minimal deployment unit that can be created, destroyed, dispatched, and managed. 　　such as a container or a group of containers. 2. Replication controllers ...

Cloud computing is already a very hot concept, involving a very large number of services, flexible computing services, file storage services, relational database services, key-value database services, and many others. This article will briefly explain the security issues of elastic computing services, as flexible computing is the most commonly used cloud service and also the cloud service with the highest security risk. 1. Introduction Since many things involve corporate secrets, technical details, implementation or new directions, this article does not explain. Interested can vote for a resume, we work together for cloud computing. 2....

The switch occupies an important position in the enterprise network, which is usually the core of the whole network. In this era of hacker intrusion and virus-ridden network, as the core of the switch is also taken for granted a part of the responsibility of network security. Therefore, the switch must have the professional security product performance, the security has become the network construction must consider the heavy middle. As a result of security switches, the integration of security certification in the switch, ACLs (Access control list), firewall, intrusion detection and even anti-virus functions, the security of the network really need ...

The idea of using the Internet to provide IT capabilities as a service is relatively new, but recently people have reached a climax in their attention. Infoq has also published several articles, such as "Introduction to Virtualization" and an article on virtualization security, but there is still a lack of comparisons between different cloud providers. This article compares three cloud computing providers, which provide a server-centric solution, starting with a description of how to start three cloud computing services and then comparing the performance, price, and availability of services to three service providers. ...

1. DDoS Attack Basics The main purpose of a Distributed Denial of Service (DDoS) attack is to make the specified target unable to provide normal services or even disappear from the Internet. It is one of the strongest and most difficult to defend attacks. According to the way initiated, DDoS can be simply divided into three categories. The first category to win, massive data packets flocked from all corners of the Internet, blocking IDC entrance, so that a variety of powerful hardware defenses ...

Overview The key information maintained by the control plane is the network state. The control plane must aggregate this information and make it available to the application. In addition, in order to maintain scalability and component reuse, applications should be exempt from protocol details, even though network state information is obtained through a specific protocol. The Onos topology of the protocol is implemented by two complementary mechanisms: Network Discovery and configuration. The former uses the network protocol to let Onos identify the location and/or performance of the network elements, and take the initiative to carry out the relevant collection work when the function is enabled. The latter allows applications and operations ...

When we talk about how to implement cloud computing, there's a lot of computer resources to manage and share, as well as applications that need to be improved, but there are very few topics and solutions on how to optimize cloud computing. However, when companies are going to decide to use cloud computing on a large scale, we are only focused on recommendations, application management, and major changes in planning - all of which will have an impact on the web. This requires a new approach to cloud computing. Today's network planners realize that "corporate networks" are the true combination of "resource networks" and "access networks." The former connection I ...