Detailed explanation of VPN technology (on)
Lu Xiaopo
Introduction
A virtual private network enables the connection of components and resources across different networks. Virtual private networks can use the Internet or other public Internet infrastructure to create tunnels for users and provide the same security and functionality guarantees as private networks. (Figure 1)
A virtual private network allows a remote communication party, salesperson
Comparison and Analysis of mpls vpn and VLAN + ACL
Scope of application: VLAN is essentially a LAN technology and is suitable for LAN isolation. However, VLAN alone cannot guarantee the isolation of IP services and must be used with ACL. In this way, all business systems are in the same IP address space, which is visible to each other and not truly isolated, leaving hidden risks for network security. Mpls vpn
I. VPN concept
VPN is a secure and stable tunnel through a chaotic public Network. Through packets and encrypted transmission of network data, a temporary and secure connection is established in a public network (usually the Internet, in this way, private data can be transmitted on the public network to reach the security level of the private network. If the access method is dial-up, it is called VPDN. Gene
This article describes how to configure packet filter support for PPTP VPN clients.
The Windows Server 2003 Routing and Remote Access service supports virtual private networks (VPNs). VPN clients can use Point-to-Point Tunneling Protocol (PPTP), second-tier Tunneling Protocol (L2TP), and IP Security (IPSEC) to create a secure tunnel to the Windows Server 2003-based Routing and Remote Access Service
What system requirements are required for per app vpn in iOS devices?
Most of the information about Apple's website and MDM manufacturers, said that the iOS 7.x device supports per app vpn, but does not specify the system environment requirements.
1. iOS 7.x device, of course
2. iOS 7.x devices must be registered and managed on the MDM server (MDM servers, such as SAP Afaria (apple aggregator may also be a
What is VPNVPN (Virtual private network) is a kind of business that uses public network resources to build a private network for customers, it transmits private data on the public Internet and achieves the security level of private network through packet and encrypted transmission of network data.It has two characteristics. First, virtual. It does not need to set up a special network for the physical connection, the use of public network resources, as long as there is connectivity to the public
SSL VPN principle
If you separate the two concepts of SSL and VPN, you should know what they mean, but as a new technology, how they are combined may not be well understood. From the academic and commercial point of view, because they represent a different meaning, so often be misinterpreted.
SSL (Secure Sockets Layer) protocol is a common protocol that guarantees the security of sending information on th
The 1,ipsec VPN application is more and more extensive, the following configuration instance is to the single headquarters multiple branch organization actual application
According to the configuration of this article, we can achieve the maximum VPN connectivity through the minimum number of VPN tunnels, the network topology is as follows:
As shown above, the
I have a lot of friends because the working relationship is often mobile office, so the transfer of information, and the company information in a timely manner or tired to open a company or home computer to see movies and so on application appears very headache. This application means secure network communication over the Internet, sharing resources. and want to achieve this kind of demand, actually already had the best way to--vpn.
A
In the real world, we often meet the company's branch offices to visit the company's headquarters or outside the business trip to the company intranet, this time need to be in the branch office or external staff and corporate headquarters to build a dedicated network. Traditional network interconnection schemes have the disadvantages of high cost, poor security and not easy to extend network. At this time, a VPN (virtual private network Network) netwo
As we all know, due to the shortage of public IP addresses, we usually use reserved IP addresses as internal IP addresses when establishing a LAN. These reserved IP addresses cannot be routed over the Internet, therefore, normally, we cannot directly access hosts in the LAN through the Internet. To achieve this goal, we need to use VPN tunneling technology.-Generally, the VPN gateway adopts a dual-network c
VPN technology introduction VPN, Virtual Private Network (Virtual Private Network), is defined as a temporary, secure connection through a public Network (usually the Internet, is a secure and stable tunnel through the public network. Virtual Private Network is an extension of the enterprise intranet. It can help remote users, company branches, business partners and suppliers to establish trusted and secure
Now there are still a lot of VPN Router applications, and the market demand is also very high, so I studied the VPN Router's questions about VPN multi-channel bundling, here I will share with you, I hope it will be useful to you. VPN (Virtual Private Network) technology is of great help and considerable economic signif
Virtual private Network (VPN) provides secure connections, but many problems may occur. The following are some situations and suggestions for handling them.The user cannot access the file server.If the user can access the file server through an IP address but not by name, the most likely cause is the domain name resolution problem. It may be due to a problem with NetBIOS or DNS host name resolution. If the client operating system uses NetBIOS, the
Soft routing is an additional feature of PacketiX VPN.PacketiX VPN has always been used as a selling point as a professional VPN product. In addition to this function, PacketiX VPN can also be used as a soft route, this function is very similar to Microsoft's [Routing and Remote Access] function. It not only supports VPN
For remote Wan users, the virtual private network (VPN) should be a secure connection, but many enterprises question the security of VPN due to many obvious vulnerabilities. RainerEnders is the CTO of NCPengineering for VPN security in the Americas. In this article, we will learn how VPN security vulnerabilities are ge
VPN on OpenBSD configuration note
VPN (vitual Private Network) has been widely used in recent years.I will not go into details if I already have many special statements. This document only configures the OpenBSD system on a PC.The VPN is a brief description. It also states that all operations are based on your own configuration experience and are implemented
There are many VPN products on the Cisco ASA Web VPN configuration market and their technologies are different. For example, in the traditional IPSec VPN, SSL allows the company to achieve more remote users to access the VPN in different locations, this service enables more network resources to be accessed and has low
VPN (Virtual private network) means to establish a private data transmission channel through the public IP network, connect the remote branch office, the mobile office personnel and so on, and reduce the cost of the enterprise remote access. VPN has both public and private network features, the public network of reliable performance, rich functions and special network flexible, efficient combination.
VPN routing technology mainly uses tunneling technology and encryption methods. Here we mainly analyze how to use the VPN route table to use both the optical fiber access network and the telecom network. If you use IP address verification, and it is not suitable for normal ADSL and other dynamic IP address users, it is not convenient to use MAC address verification, because many ADSL uses a router to access
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