What Are Virtual Private Networks

Last week, we announced the public release of Windows http://www.aliyun.com/zixun/aggregation/13357.html ">azure infrastructure services and virtual networks." With virtual network services, you can create a separate private network in Windows Azure as an extension of the datacenter. You can assign a dedicated IP address to a virtual machine on a virtual network, specify DNS, and use Cisco or Juni ...

If the OpenStack summit this week brings some kind of warning, virtual networks are a hot topic for it. Representatives from HP, Big Switch and Midokura participated in a http://www.aliyun.com/zixun/aggregation/18519.html "> Panel discussion on virtual networks in the cloud." Ebay and Nicira engineers talked about their implementation of software definitions in a larger conference room without a seat ...

When we talk about production environments, each administrator should consider all possible single points of failure (SPOF) and resilience in the schema. Here, we will explore the VIOS and LPAR networks, which eliminates the most likely SPOF of the network, providing a separate network that can quickly communicate with the backup server to access applications and databases. This architecture has been widely used, where users can access the server 24x7, and administrators can back up data without affecting user bandwidth. Figure 1. Schema diagram in this architecture, ...

Enterprise Private "cloud" application development trend and many similar industrial revolutions, cloud computing is driving different industries to change the original mode. As Shane Robinson, Hewlett-Packard's chief Strategic Technology officer, Chene Robinson, the IT technology industry is at an important turning point, and while this transition is still in its infancy, it will ultimately change the way we get information, share content and communicate with each other. This new wave will be driven by a new computing paradigm: Businesses or individuals will no longer need to be in computers ...

Industry dialogues have transcended the understanding of http://www.aliyun.com/zixun/aggregation/14032.html "> What is Cloud computing, in which the enterprise IT environment decides how to deploy it better. 　　This evolution is similar to the debate over past virtualization candidates-knowing how to determine whether a physical server can be a good virtual machine. The idea of a cloud candidate is to choose the best candidate for the cloud, as well as to maximize the return on your cloud investment. Here is a list that can be ...

The private cloud is generally considered the safest cloud computing model because it is run by the company's own direct control of cloud computing security. 　　However, as with many theories or product prototypes, the complexity of the actual problems in the real world is often unpredictable, that is to say, new things bring benefits, but also to us the challenge of new security proposition. The biggest challenge is to reduce barriers, create and change production virtual mirrors. Let's imagine how the private cloud environment evolves over time: employees create "disposable" mirrors to meet key dates or QA ...

A virtual private network (VPN) is defined as a temporary, secure connection through a public network (usually the Internet), a secure, stable tunnel through a chaotic public network. This tunnel can be used to encrypt data several times to achieve the purpose of safe use of the Internet. The virtual private network is an extension of the intranet of the enterprise. A virtual private network can help remote users, corporate affiliates, business partners, and suppliers establish a trusted and secure connection with the company's intranet and secure data transmission. Virtual private network can be used for the growing mobile users of the global Internet access to the real ...

IP Virtual Private network is a very complex technology, involving all aspects, the most critical of which is the tunnel technology. Simply put, the virtual private network is actually the data encapsulation of the enterprise network in the tunnel for transmission. Because the tunneling protocol is relatively complex, the virtual private network technology is complicated. The most typical of tunneling protocols are IPSec, L2TP, GRE, PPTP, L2F, and so on. Where GRE, IPSec belongs to the third-tier tunneling protocol, L2TP, PPTP and L2F belong to the second-tier tunneling protocol. The essential difference between the second and third-tier tunnels is that ...

Private Cloud is the latest attempt by data centers to improve efficiency and enhance hardware and software flexibility. 　　The idea is to create a pool of computing resources, storage, and network resources and manage them from a central software control point, rather than manually implementing the relevant regulations for all infrastructure, monitoring and reconfiguring management. Predictably, the public cloud service provider itself is the most experienced in designing and running shared infrastructure. Amazon, Google, Microsoft, Salesforce will not use the old traditional let static infrastructure dedicated to individual application of the method to pipe ...

Cloud computing has become a hot topic for all industry insiders. But cloud computing is not enough, and virtualization is still an important step in developing a private cloud strategy. If you have already partially virtualized your IT infrastructure. Recently, cloud computing has attracted almost all of the attention due to the benefits of cloud computing and the nature of virtualization's limitations. Virtualization focuses on itself and virtual machines (VMS), the performance of virtual machines, and the functionality that can be achieved once a physical server is virtualized. By contrast, private cloud computing is broader, not just ...