Xen Monitor

September 23, virtualization technology for the Linux kernel Xen was given a hat-trick with 3 security vulnerabilities. Xen vulnerabilities can be jumped out of the virtual host environment (ultra vires), or read other user data, control the hypervisor itself (host). A remote attacker could exploit a vulnerability that could cause the host system to crash and deny service to legitimate users. Xen Vulnerabilities and impact range is not small, such as Amazon AWS Large-scale restart server-the entire repair cycle lasted 5 days (from September 25 7 o'clock in the afternoon to September 30 5 o'clock in the afternoon), impact ...

Open source projects because of its openness, free, free and flexible characteristics of the majority of developers love. In recent years, a lot of open source free things are popular. While cloud computing is the hottest technology term in recent time, cloud computing + open source is not a new event, now, there are more and more open source projects for the cloud, the overall development of cloud computing plays a vital role. Now let's take a look at the most popular 10 open source projects related to the cloud. 1. Open Source PAAs platform: Cloud Foundry and OpenShift Clo ...

Microsoft released a beta version of Microsoft's System Center product, Virtual Machine Manager (VM Manager, VMM), hoping to regain user confidence in the competition with VMware. System Center is one of the Microsoft server-facing management software suite products, its first version of Microsoft System Center O ...

From the Institute of Software Research, Chinese Academy of Sciences, National Engineering Research Center system security and Trusted computing, Ms. Ding Liping for you to share "cloud computing environment covert channel analysis." 　　She described in detail the three aspects of covert channels, security threats and covert channels in cloud computing environments, and their work. ▲ Software Institute of Chinese Academy of Sciences the concept of covert channel covert channel at operating system level refers to the way that malicious process realizes information leakage through collusion information system (Ding Liping), and the covert channel analysis is the security standard at home and abroad.

Hardware-assisted virtualization, a more efficient and reliable way to implement virtualization is implemented in two ways: pure software virtualization and hardware-assisted virtualization. Technically, hardware-assisted virtualization enhances the performance, flexibility, and reliability of virtualization by improving the isolation of the customer's virtual system. It is also simpler to implement. Virtualization technology was first adopted on large mainframe, with the development of technology and the intensification of competition, IBM, HP and Sun later moved it down, and gradually introduced it into the high-end RISC server system. With the improvement of the X86 processor performance and the popularization of the application ...

As a new computing model, cloud computing is still in its early stage of development. Many different sizes and types of providers provide their own cloud-based application services. This paper introduces three typical cloud computing implementations, such as Amazon, Google and IBM, to analyze the specific technology behind "cloud computing", to analyze the current cloud computing platform construction method and the application construction way. Chen Zheng People's Republic of Tsinghua University 1:google cloud computing platform and application Google's cloud computing technology is actually for go ...

Virtualization is the first step toward the cloud, and, similarly, open source virtualization is the first step toward an open source cloud. Cloud computing offers products and solutions that revolve around the new delivery and consumption patterns of IT resources. The diversity of the cloud, the private cloud, the public cloud and the hybrid cloud, no matter which cloud has three key characteristics: virtualization, standardization and automation. So, what's a KVM? Can it meet the needs of the enterprise to the cloud? What's a KVM? KVM (kernel-based Virtual Machine) Source ...

Cloud computing is able to provide a virtualized pool of resources, flexible service capabilities, self-service, etc., won the CIO's favor, in order to improve the utilization of IT equipment, improve the capacity of service disaster, improve the rapid response to business support, the majority of enterprises are beginning to try the private cloud construction. The embarrassing situation of private cloud security in general, the transition from the existing IT management system to the private cloud platform requires several steps: Large data centralization, business system integration, virtualization of IT resources, management platform cloud, and cloud service delivery. (many people think that private clouds ...

With the extensive deployment of multi-core systems, clusters, grids and even cloud computing in recent years, virtualization technology has become more and more advantageous in business applications, not only reducing it costs, but also enhancing system security and reliability, and the concept of virtualization has gradually deepened into people's daily work and life. Aiming at the x86 platform, this paper first gives the basic concept and classification of virtualization technology, then expounds the realization principle and challenge of pure software virtualization, and finally introduces ...

Over the past few decades, firewalls have been a port-based guardian of the Internet. 　　Now vendors are scrambling to roll out so-called "next-generation firewalls" because these "application-aware" firewalls can monitor and control access based on application usage. In addition, many firewalls have added more and more features to try to discover the 0 attacks, including intrusion prevention systems (IPS), web filtering, VPN, data loss protection, malware filtering, and even threat detection sandbox. For a separate IPs, because of its application control, it may be called "Next Generation IPs" ...