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Openvpn is an open-source VPN software used on LINUX gateway servers. as its name implies, openvpn is used to connect a secure virtual private channel, allowing users to remotely work and obtain intranet resources.
The software can be used across platforms in Linux, xBSD, Mac OSX, and Windows. openssl is used as the encryption library and the encrypted certificate or user name/password is used for identity authentication, is a
Tags: VPN centos linux PPP PPTPWhat is a VPN? VPN is a virtual private network, its function is to establish a private network on the public network, to encrypt communications.The VPN gateway enables remote access through the encryption of the packet and the conversion of the destination address of the packet.
Many people may not have a special understanding of the soft route function, so I studied the questions about how to implement VPN dual-line access in the soft route function. I would like to share it with you here and hope it will be useful to you. As we all know, two-line routing can be implemented using hardware routers and software routers (ROS in Linux and Policy Routing Technology in Windows), while hardware routers themselves are dedicated, so
A vps host (or VPS) is a virtual server that uses virtual server software to create multiple isolated small servers on a physical server, each VPS has its own operating system, independent space, independent memory, and independent CPU resources. It can independently execute programs and system configurations, its operation and management, and its independent servers.
Virtual Private Server (VPS) is used to create multiple isolated small servers on a physical Server, each VPS has its own operati
Virtual Private Network (VPN) refers to the technology for establishing a Private Network on a public Network. It is called virtual network, mainly because the connection between any two nodes of the VPN network does not have the physical link from the end to the end required by the traditional private network, but is built on the network platform provided by the public network service provider.In the past
I. Main VPN technologies in Linux
1. IPSecInternet Protocol Security)
IPSec is a perfect security standard for IETFInternet Engineer Task Force. It combines several security technologies to form a complete system, which has received the attention and support of many vendors. Data Encryption, authentication, and integrity check ensure the reliability, privacy, and confidentiality of data transmission.
Advantage: it defines a set of standard protocols f
Recently, global growth-oriented commercial network experts and wireless network pioneer NETGEAR announced the launch of ProSafe Wireless ADSL modem VPN Firewall Router (DGFV338. DGFV338, a small and medium-sized enterprise customer, is a compact, fully functional, six-in-One Security dedicated device. It has the features that NETGEAR's DG product line has failed to provide.
Recently, global growth-oriented commercial network experts and wireless netw
Linux uses pptpconfig to connect to the vpn Server-Linux Enterprise Application-Linux server application information. The following is a detailed description. If it is in Windows XP, you can directly connect to the vpn Server by using the XP dial-up software. The configuration is very simple, but there is no default vpn Client software in linux, this makes it dif
Configure vpn in ubuntu to support Internet access
The company's development environment is LAN, and there is no problem in the company's internal use, but sometimes it does need to be used outside, such as at home, on a business trip, at this time you need to configure a vpn connection to the company's intranet. The vpn configuration is very simple, but sometime
This article attempts to describe what a VPN tunnel is in simple language and explains how VPN provides strong anonymous and privacy protection.
The operation performed by the VPN tunnel is called Data encapsulation. To understand what encapsulation is, let's make a simple analogy. If you are a political refugee living in another country, the secret of your place
Build a VPN on CentOS
Linux: CentOS
1. Check the server for necessary support. If the check results do not support these features, pptp cannot be installed. Command:Modprobe ppp-compress-18 echo OKAfter this execution, "OK" indicates that the execution is successful. However, another check is required. Enter the following command:Cat/dev/net/tunIf the following information is displayed, ticket can be activated for vps vendors if not supported. Most v
Topology:
Note: The company's Intranet environment requires domain support;
The front-end two VPN servers are Linux operating systems;
A green line indicates the physical link of the network environment;
Red indicates the authentication method;
# When a user requests a VPN connection, use the domain account to log on. DNSPOD determines whether it is a China Telecom or a China Unicom (China Netcom) Resource
First, the question of the proposedAs shown in Figure 1, In the unit has a private address for the 192.168.0.0 network, the computer is through ADSL sharing access to the Internet, a computer in the home also through ADSL access to the Internet, now want to safely at home at any time to visit the unit 192.168.0.2 this machine, many ways to achieve, the most secure is through Vpn.Second, what is a VPNIn this case, it is now the unit 192.168.0.2 the VPN
System environment: Windowsserver2008r2enterprise (fully installed)1, Configuration preparation work1.1, click on the "Start" to the right "Server Manager"1.2, click "Role" in "Server Manager"1.3, in the "role" click on the right to select the translation "Add Role", click "Next"1.4, in the "role" select "Network Policy and Access Services", click "Next"1.5, click "Next"1.6. Select the Routing and Remote Access service1.7, click "Install"2. Configure the VPN
About PPTP
Point-to-Point Tunneling Protocol (English: point to Point Tunneling Protocol, abbreviated to PPTP) is one way to implement a virtual private network (VPN). PPTP uses Transmission Control Protocol (TCP) to create controlling channels to send control commands and to encapsulate Point-to-Point Protocol (PPP) packets to send data using the generic Routing Encapsulation (GRE) channel. This agreement was first developed by manufacturers such as
1, create VPNRouting and Remote Access--configure and enable and route remote access--Custom configuration--Select VPN access, NAT, and Basic Firewall.
2,VPN ConfigurationIP Routing (nat/Basic Firewall)--New interface (select Local network card)--select "public interface to connect to the Internet" and choose "Enable NAT (E) on some interfaces--add servers in the Address pool column ip--add server IP under
, use the following command to download:
wget http://poptop.sourceforge.net/yum/stable/packages/pptpd-1.4.0-1.el6.x86_64.rpmRPM-IVH pptpd-1.4.0-1.el6.x86_64.rpm
3. Configure
Ppp
Configuring PPP requires editing its two profiles, one option (options) file and one user account file. First edit Option file:
Vim/etc/ppp/options.pptpd
Find Ms-dns
Modify:
Ms-dns 8.8.8.8Ms-dns 8.8.4.4
Next, modify another file that stores the user account:
Vim/etc/ppp/chap-secrets
This file is very simple, w
Description
RouterOS Server ip:172.31.101.80
RouterOS version: RouterOS V6.15
Demand:
To configure the PPTP VPN server on the RouterOS server, the PPTP VPN Client dial-in network segment is: 172.31.101.60-
172.31.101.79
Operation Steps:
First, login RouterOS server
Use Winbox to login here RouterOS
Winbox Download: Http://
Detailed explanation of VPN technology (next)
Lu Xiaopo
(Immediately medium)
Data transfer phase
Once this 4-phase negotiation is complete, PPP begins forwarding data between the connecting peers. Each transmitted datagram is encapsulated within the PPP header, which is removed after it arrives at the receiving party. If you choose to use data compression in Phase 1 and you have completed the negotiation in Phase 4, the data will be compressed bet
I. Overview:
Both ends of the headquarters and division are PIX8.0, all for De Chinglu, such as a telecommunications line, a mobile line, requiring telecommunications lines to go their own online internet traffic, mobile line to go VPN traffic, but if the telecommunications line failure, or mobile line failure, can not interrupt the Internet and VPN connection.
Two. Basic ideas:
A. Set two default gatewa
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