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blue light VPNtechnical descriptionwall:
virtual private network, that is, we usually say that the VPNwall, not a brand new network concept. As its name reveals, theblue light VPNcan be defined as a use of public network facilities private network services. A typical example is a call. When we told friends to call when using the Public telephone network in between the two sides to establish a virtual private connection.< b>blue light VPNwall, two important concepts are virtual and private. The so-called virtual, is with the real relative. In a real private network, so the network devices are affiliated with a company or Agency. While a virtual private network using a public network infrastructure, so it's not really private. The so-called private, refers to all of the real information to the outside world is not visible. Although theblue light VPNThe Parties to the communication using the public network, but can through information encryption means to ensure the security of data and private. For example:Ark VPN,ArkVPN,mxvpn

SuperVPNwhy do you want to deploywallfor?< br>deploymentSuperVPNthe main reason is that it can save money. In the modern economic activities, many multinational companies around the world have their own branches and offices. They often need to be Business Communication and remote collaboration of theSuperVPN. The Obviously, the use of Internet solutions to be much more economical. If theSuperVPNThe use of private leased line, the need in each of the two branches between the establishment of point-to-point connection. If there are n branches, then each branch requires at least n-1-th line. Such a composition of the private network not only complex, but also very expensive. Not an ordinary company can afford. And the use of the Internet solution is both simple and economic, each branch is only responsible for the own access to the nearest Internet node.< b>vpn small to fly person, Braun vpn,snails vpn

cloud.technology description
cloud.VPN, Virtual Private Network a virtual private network, is defined as through a public network usually the Internet to establish a temporary, secure connection, is a public network through the security, stability tunnel.< b>cloud.virtual private network is an extension of the intranet,it can help remote users, company branches, business partners and suppliers with the company's internal network connection to establish credible security and ensure the security of data transmission. For example:the East wind vpn,FlyVPN,red VPN

ladder
the IETF for IP-basedladderexplanation is: through dedicated tunnels encryption technology in the public data network on a simulation of a point-to-point leased line technology. The so-called virtual, is the means that the user no longer needs to have actual long-distance data lines, but the use of the Internet public data network long-distance data line. Earlyladdera private network generally refers to Telecom operators to provide Frame Relay or ATM virtual fixed line（PVC）service of the network, or by operators of the DDN network to build user's own private network. For example:OpenVPN Connect,extraordinary VPN,whalevpn

day line VPN
now is on the Internet the temporary establishment of a secure private virtual network, the user saves leased line costs, while in addition to buy VPN walldevice or VPN software products, the companies paid only to the business location to the ISP to pay a certain cost of access, for different regions of theday line VPNCustomer Contact also saves long distance charges. This is VPN walllow price reasons.< br>
to the OSI model reference standard, differentday line VPNtechnology may be at different OSI Protocol Layer implementation.< br>in the following table: days line VPNin the OSI hierarchy to achieve the
application Layer SSL VPN
session layer Socks5 VPN
network layer IPSec VPN
The Data Link Layer PPTP and L2TP
for example:91VPN,Gold key VPN,expressvpn

Green VPN of thewall application-Layer SSL Protocol:
Secure Sockets Layer, Secure Socket Layer,SSL Belonging to the high-level security mechanisms, widely used in the Web browser program and Web server program, providing peer-to-peer authentication and Application Data Encryption. In SSL, theGreen VPNauthentication is based on certificates. Server direction client-side authentication is required, and the SSL version 3 customers in the direction of the service side of the Certification is only optional, but has not been widely applied. The SSL session contains a handshake phase, in this phase communication between the two sides to exchange a certificate, generates a session key, theGreen VPNnegotiation after the communication using the encryption algorithm. The completion of the handshaking after the B/S application, the application can safely transfer data without having to make any major changes, except in the transmission of data to be called when the SSL API instead of the traditional socket API, but for the C/S structure of the application software, the solution with the session layer of theGreen VPNsimilar. For example:Turbo VPN,Panda VPN,FlyVPN

fast meow VPNof the wallsession layer
Socks4 Protocol: Socks in the OSI model the session layer, the Socks Protocol, the client program through a Socks client to the 1080 port through the firewall to initiate a connection to establish a Socks server'sfast meow VPNtunnel, and then proxy application client and application server communication. In this framework, the Protocol can safely and transparently through the firewall, and the client program on the destination host is not visible, so it is better to hide the target host. Socks4 Protocol, which is the TELNET, FTP, HTTP, WAIS and GOPHER and other TCP-based protocols does not include a UDP client/server program provides a certification Firewall, the establishment of a no encryption and authentication of VPN tunnel. The network layerfast meow VPNtechnology.< br>
cloud wall VPN, IPSec Protocol:
IPSec is IETF support for the standard one, and it is the first two it differs in that it is the third layer, i.e. IP layer encryption. IPSec is not some kind of special encryption algorithm or authentication algorithm, nor in thecloud wall VPNdata structure to specify a particular encryption algorithm or authentication algorithm, it's just a open structure, defined in the IP data packet format, different encryption algorithms can use IPSec to define the system structure in the network data transmission process in the embodiment. the
IPSec Protocol can be set to operate in two modes: one is a tunnel, tunnel mode, one is a transmission(transport)mode. In tunnel mode, IPSec the IPv4 packet is encapsulated in a secure IP frame. The transmission mode is in order to protect the end-to-end security, i.e. in this mode does not hide routing information. Tunnel mode is the most secure, but thecloud wall VPNwill bring a larger system overhead.< br>
Racing the wind,psiphon,L2F/L2TP Protocol:
L2F remote user to passRacing the windof any dial-up access to the public IP network. First, in a conventional manner to dial up to the ISP's Access server NAS, and establish a PPP connection;