vpn dangers

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What is VPN, what is the use of VPN

  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

Pptp settings and local vpn (and solve the problem that ssh cannot access the remote host under the vpn)

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

XP connection VPN error prompt: VPN connection error 789: L2TP connection attempt failed, because the security layer encountered a processing error during initialization and remote computer negotiation.

What is VPN? The full name of VPN is "Virtual Private Network", which is translated as "Virtual Private Network ". VPN is defined as a temporary and secure connection through a public network (usually the internet). It is a secure and stable tunnel through a chaotic public network. Using this tunnel can encrypt data several times to ensure secure Internet use.

Vpn Principle and Implementation-Build a vpn with a virtual Nic

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

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

Compile a Python script to configure VPN in batches and a python script vpn tutorial

Compile a Python script to configure VPN in batches and a python script vpn tutorial Origin As we all know, the recent network is not harmonious, the speed is slow, and the VPN is still disconnected. Fortunately, yunti provides a lot of servers for switching, but there are quite a lot of yunti servers, in Linux, Network Manager does not support batch configuratio

The Traditional VPN technology is no longer competent for the mobile Internet, vpn mobile Internet

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

Pptp settings and local vpn (and solve the problem that ssh cannot access the remote host under the vpn), pptpssh

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

Teamviewer vpn + win7 vpn create a remote access to the Intranet environment

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

Build a VPN under Cent OS and set up a vpn for centos

Build a VPN under Cent OS and set up a vpn for centos 1. Make sure that PPP and TUN are enabled for the machine Cat/dev/pppcat/dev/net/tun If the output is in the afternoon, it indicates that the request passes. Otherwise, contact the supplier. Ii. one-click installation script Wget http://www.laozuo.org/download/scripts/openvz_centos_vpn.sh chmod a + x openvz_centos_vpn.sh The execution re

IKEV1 and IKEv2 in Cisco VPN--IPSEC VPN

Tags: mode environment Port Mob cookie inter between features creatIKE (Internet Key Exchange)-Internet Key exchangeIn order to introduce the FLEXVPN based on IKEV2, this paper introduces IKEV1 and IKEv2 differences.Before starting the introduction, take a look at the application and workflow of IKEV1 in IPSec VPN.In IPSec VPN, IKE is used to negotiate IPSec SAs. This procedure requires IPSec to first authenticate each other and establish a ISAKMP sha

Using ISA firewall to establish VPN server and dial-in of extranet VPN user

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

Free VPN, vpn

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

Branch L2L VPN to headquarters and PAT to partner through leased line (SVTI establishes VPN)

I. Overview:I received A friend's question in my blog. After phone communication, I learned the approximate situation:. the headquarters has a leased line to partner B. the partner side is not convenient to add a back-to-point route. When the Headquarters accesses the partner, PATC is implemented. now, if you want to connect the branch L2L VPN to the headquarters and PAT to the partner, the traffic from the branch to the partner is routed to the loopb

Windows 8.1 automatic reconnection of VPN disconnection (used when VPN is used on campus and internet), 8.1vpn

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

Igp Summary of the VPN gateway using the kernel-VPN Protocol

Igp-Summary: an advanced distance vector routing protocol, which features both distance vector and link status routing protocols. China site, applletalk and other network layer protocols. VPN is an efficient routing protocol. It has the following features: 1. control layer: Different igp protocols, small AD (AD can be used to manage the distance and the advertised distance of VPN, this refers to the Managem

The old version of the VPN system GETSHELL of wangshen (also affects multiple VPN manufacturers' devices, such as Wangyu Shenzhou, tianrongxin, Xi'an wangying, weishitong, Geda zhengyuan, American concave and convex, and ANIX in Germany)

The old version of the VPN system GETSHELL of wangshen (also affects multiple VPN manufacturers' devices, such as Wangyu Shenzhou, tianrongxin, Xi'an wangying, weishitong, Geda zhengyuan, American concave and convex, and ANIX in Germany) In the/admin/system/backup_action.php file if (isset($_REQUEST['cmd']))$cmd = $_REQUEST['cmd'];else$cmd = "NULL";$with_cert = 1;$pass = "";include_once "management/system.p

How does an Android phone connect to a VPN? On-Phone VPN tutorial

1. The following is an example of an Android phone, we click "Settings" to enter, as shown in the following figure. 2. There is a more or more network connection in the Setup interface, which has the following interface 3. After this enter the interface, we click on "VPN" to open the new interface click "+" increase, as shown in the following figure. 4. Then we enter the domain name of the Outland, such as image encryption 5. Now back to t

VPN user accesses the VPN server in the domain through ISA (CA certificate)

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

Configure Cisco ios easy vpn Server and Cisco VPN Client

Two physical hosts are used to simulate the company and home network respectively. Both physical hosts are connected to a TP-link home Broadband Router to simulate the Internet environment. Two virtual NICs are bound to one vmwarevm respectively. The purpose is to achieve access between two vmwarevms through VPN.Company network topology650) this. width = 650; "src =" ../attachment/201209/215639928 .png" border = "0" alt = ""/>The company router configuration is as follows: Building configuration

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