Protocol Tunneling

The Ip_security Protocol (IPSEC) is a protocol recommended by the Internet Engineering Task Force (IETF) for IP security. VPN can be realized by the corresponding tunneling technology. There are two modes of IPSec: Tunnel mode and transport mode.    &http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; The IPSec protocol group also includes support for the network layer ...

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 ...

To adapt to the needs of information and mobile office, many enterprises have deployed VPN servers. The VPN (virtual private receptacle), which is built on the Windows Server 2003-based Routing and Remote Access service, is a secure and convenient remote access solution, and is now the preferred choice for most small and midsize enterprises. 　　Then how to secure the VPN is a problem for the enterprise CIO to face. VPN solution is to virtual ...

Linux has 3 kinds of tunnels. They are: IP-in-IP tunnels, GRE tunnels, and non-kernel tunnels (such as PPTP). 1. Some comments about the tunnel tunnel can be used to implement many very unusual and interesting features. But if you have a problem with your configuration, there will be terrible mistakes. Do not point the default route to a tunneling device unless you know exactly what you are doing. Furthermore, the tunneling increases the protocol overhead because it requires an additional IP header. Generally it should be 20 bytes per packet, so if the MTU of a network is 1 ...

Since 2006, when Google introduced the concept of cloud computing, as a new technology and business model, the concept of divergent views. Various agencies and experts in related fields have defined cloud computing from different perspectives, such as some from the application scenario, and some from the resource angle. Among them, the September 2009 U.S. National Institute of Standards and Technology (NIST) proposed the definition of cloud computing, is very representative, has been widely accepted by the industry: "Cloud computing is a convenient access to a shared pool of resources, on-demand computing resources (these resources include network ...).

"Editor's note" Network after years of development, has come to the "post-Cisco" era, software definition network, network virtualization and other nouns have come to everyone, this article focuses on the traditional network architecture and SDN network of similarities and differences, the development of network virtualization, you can see, SDN manufacturers are gearing up, because of " We usually overestimate the changes in the next two years, and underestimate the changes that will happen in the next decade ", the traditional enterprises need to actively face the future changes in the network operation, the author from the Network Transformation and technology transformation in two aspects of the network industry in-depth discussion of the ...

Recently, the FBI has proven to people the fact that it is easy to analyze attacks on wired equivalent encryption to gain access to wireless networks that use this security protocol. According to the announcement, Jonathan Yarden is considering a test of the role of security in the wireless network, and based on the results of this test, he will make some suggestions on how to protect the safety of wireless networks. Years ago, in a computer exhibition with a very prosperous network concept unit, I was paralyzed in one now ...

In an internal email to Alibaba employees, Mr Ma said the IT era, with its control as the starting point, was moving toward the data age of Marvell, the purpose of activating productivity. With the development of computer technology, large data computing becomes more and more realistic, and companies based on large data application services are emerging. 　　The application of large data in the field of marketing has turned advertising into a "narrow"-precision marketing, and in the context of Internet finance, large data in the financial industry, the application of credit is gradually rising. Everyone is "data animal" different from ...

Data for the corporate network dark attack and defense war. Data caching, also known as data extrusion, refers to the transfer of data from a computer without authorization. For the corporate network, these types of attacks can be done manually, such as using a USB drive; in addition, this attack can also be automated, when the need to use the network to transfer data. In this article, we will highlight the web-based data caching techniques used during penetration testing, along with the corresponding security hardening measures. As tunneling technology, we assume that we do not have valid domain credentials. This means that I ...

Many network administrators do not realize that their routers can be a hot spot for attacks, and that the router operating system is as vulnerable to hackers as the network operating system. Most SMEs do not hire router engineers or outsource this functionality as a necessity. As a result, network administrators and managers have neither the knowledge nor the time to secure the router. Here are 10 basic tips for ensuring router security. 1. Update your router operating system: Just like the network operating system, the router operating system also needs to be updated to correct programming errors, soft ...