What is a VPN?
The English full name of the VPN is "virtual private network", translation comes from "The fictitious specialized network". As the name suggests, virtual private network we can understand him as a virtual out of the enterprise internal line.
This VPN's English full name is "Virtual private network", translates is "The fictitious private network". As the name suggests, the virtual privat
, and the tunnel server terminates the tunnel. The ISP does not have to support the tunnel. Customers and tunnel servers only need to establish tunnels and use user IDs and passwords or digital license authentication. Once the tunnel is established, communication can be performed, just as if the ISP is not involved in the connection.
On the other hand, if you want the tunnel to be transparent to the customer, the ISP's POPs must have the access server
, when the user enters a URL in the browser, the connection is obtained by the SSL proxy server and the user is authenticated, and the SSL proxy server provides a connection between a remote user and a variety of application servers. Mastering the meaning of four key terms helps to understand how SSL VPN is implemented. That is: agents, application transformations, port forwarding, and network extensions.
Pptp settings and local vpn (and solve the problem that ssh cannot access the remote host under the vpn), pptpssh1. Install pptpSudo apt-get install-y ppp pptpdsudo vim/etc/pptpd. conf modification: option/etc/ppp/pptpd-optionslocalip 172.31.26.19 (local vpn address) remoteip 172.31.26.20-200 (vpn customer point addres
Pptp settings and local vpn (and solve the problem that ssh cannot access the remote host under the vpn)1. Install pptpSudo apt-get install-y ppp pptpdsudo vim/etc/pptpd. conf modification: option/etc/ppp/pptpd-optionslocalip 172.31.26.19 (local vpn address) remoteip 172.31.26.20-200 (vpn customer point address range)C
VPN is the abbreviation of Virtual private network, it is simply to use public network link to erect private network, it belongs to remote access technology.
VPN server in the current network application is more and more extensive, today I come to you for a brief introduction of the VPN server configuration and users use VPN
Vpn Principle and Implementation-virtual Nic build vpn virtual Nic support the physical layer by implementing one character device, so that the application layer and the physical layer are connected through this character device, the character device reads the byte stream sent from the virtual network card to the physical layer. The data written to the character device is received by the virtual network car
Graphic introduction to login VPN Server in Android system settings (with a URL that allows you to register a VPN account for free, please pay attention to it !), Androidvpn
Step 1: Open the main menu of your phone, select "Settings", and then select "wireless and network"
Step 2: Select "VPC Settings"
Step 3: Select "add VPC"
Step 4: Select "add vpn pp
, one option (options) file and one user account file. First edit Option file:
Vi/etc/ppp/options.pptpd
When I edit this file, it already exists, and there is little need to edit it, and if the file does not exist, create it yourself and fill in the following valid configuration. The following are valid lines in this file:
Name pptpd
refuse-pap
refuse-chap
refuse-mschap
require-mschap-v2
require-mppe-128
Ms-dns 8
ms-dns 4
proxyarp
lock
nobsdcomp
novj
novjccomp NO
: PPTP (Point-to-point tunnel Protocol) is a point-to-point secure tunnel protocol developed by the PPTP forum. It provides secure VPN services for users who use telephone Internet access and became the IETF draft in 1996. PPTP is an extension of the PPP protocol. It provides a multi-protocol secure VPN communication method on the IP network. remote users can access the private network of an enterprise thro
Free VPN, vpn
I will not talk about what VPN does. I will give you a free VPN URL (one-hour VPN). Some of you may know this, but some do not know it, in the spirit of sharing happiness, the bloggers will share with you that cainiao can easily use
= 3des-sha
[Default-quick-mode]Doi = IPSecExchange_type = quick_modeSuites = QM-ESP-AES-SHA-PFS-SUITE
(Other examples can be found in isakmpd. Policy and isakmpd. conf manuals ). These filesIt should all be in the/etc/isakmpd of the gateway.After reading the information of these configuration files, the two gateways have enough information to verify the identity of the other party., Exchange keys, and then use the normal process to change and synchronize their encryption keys.For the first co
network is stricter than that in an enterprise's internal virtual private network or an extended internal virtual private network.
In some offices, information is required to be shared among multiple LANs. For example, the gateway devices in two offices share information over a secure VPN tunnel, site-to-site VPN establishes one-to-one endpoint association between the two networks through the
Windows 8.1 automatic reconnection of VPN disconnection (used when VPN is used on campus and internet), 8.1vpn
First, right-click my computer, Open Computer Management, select "Task Scheduler", and then click "Create task"
Show as shown in, (the bold font must be filled in accurately)Fill in basic information in the "regular" columnName: vpn (whatever)Descript
The Traditional VPN technology is no longer competent for the mobile Internet, vpn mobile InternetWith the rapid increase of network bandwidth and the gradual reduction of access fees, more and more videos will be transmitted on the Internet instead of text. The video performance is direct, while the text is abstract, video Production is convenient and fast, while text is complex and slow. You can use a cam
server hardware.
Different architectures depend on the servers behind the firewall
We have several types of architecture that can be used to deploy the VPN platform. The most common architecture for remote access involves creating a VPN Server behind the Perimeter Firewall of the isolation zone (DMZ), allowing specific ports or URLs to access the server through
In general, VPN users are connected to the VPN server is to enter the password, if so, in some public places when the password is likely to cause leakage of passwords, resulting in unnecessary losses. Password Authentication protocol Although the hardware requirements are not as high as the Challenge Handshake protocol, however, in terms of security, it is still a distance from the challenge handshake agree
Teamviewer vpn + win7 vpn create a remote access to the Intranet environment1. teamviewer vpn is the simplest. Select vpn as follows. However, you must select this feature when installing teamviewer.Connect and remember the partner ip address.2. Set up an "incoming connection" for the Intranet PC in win7
uses the standard IPSec protocol to set the underlying layer, but the entire program is automatically completed by QVM products for users. In this way, the VPN configuration of SmartLink will not affect the security of the IPSec protocol, but also greatly simplify the work of network administrators to deploy the VPN network.
1. First, you must set the server to add the user-side account and the accessible
personal use.
Some of its features are:
No hardware required-a quick, simple and easy-to-use VPN that just works
Secure communications-encrypted tunneling messaging SS public and private networks
Flexible networking-combines the protocol of an ssl vpn with the connectivity of an IP-sec VPN
Web-based management-deploy to anyone, manage from anywhere, access
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.