Problem: PPTP is used to build a VPN Server on the Linux platform. After dial-in, the Intranet FTP is accessed. downloading files is extremely slow. When using PPTP as a gateway to access the Internet, most websites except Baidu are extremely slow to access, almost inaccessible. Solution: Add-I forward-P TCP -- SYN to the * filter table of iptables of the Linux service where PPTP is located.-I ppp +-J tcpmss -- Set-MSS 1356/sbin/iptables-I forward-p t
In Vultr VPS, the entire pptp vpn process is manually built using Debian 8 i386 (jessie) as the operating system platform.
Update the server and install the PPTP Service
Apt-get update
Apt-get upgrade
Apt-get install pptpd
Edit/etc/pptpd. conf
Find # localip and # remoteip, delete # And set the ip address
Localip 172.16.31.254
Remoteip 172.16.31.234-238
Edit/etc/sysctl. conf
Remove # net. ipv4.ip _ forwar
1, the VPS (server) on the operation as follows
The code is as follows
Copy Code
Mkdir-p/root/software/vpnCd/root/software/vpn # Download Packageswget http://www.oberhumer.com/opensource/lzo/download/lzo-2.05.tar.gzwget http://swupdate.openvpn.net/community/releases/openvpn-2.2.1.tar.gz # Decompression and InstallationTar zxvf lzo-2.05.tar.gzcd/root/software/vpn/lzo-2.05./config
regularly downloads the IP addresses of other members in the same group to the local device, so that the VPN can be established based on the current public IP address.
Take the Shanghai Ice Peak network directory service technology as an example. When the Ice Peak VPN device starts, PPPOE dial-up is performed first. After the dial-up is successful, you can obtain the currently used public IP address, then,
to one group to the local, so that the VPN can be established according to the current public network IP.
Taking the directory service technology of Shanghai Bingfeng Network as an example, when the Bingfeng VPN device starts, the first PPPoE dial-up, after the successful dial-up, you can get the current use of the public network IP, and then automatically search its
launching VPN services. They are mainly divided from the perspective of business development. Users often have their own division methods, mainly based on their own needs. The following describes the classification of VPN from different angles.
1. divided by access method
This is the most important VPN division method for users and carriers. Under normal circums
access devices of the Public Information Network, allow your users to dial to the public information network to connect to the enterprise network. The reason for this is that the connection between any two nodes of the VPN network does not have the end-to-end physical link required by the traditional private network, it is a logical network built on a network platform (such as Internet, ATM, and frame rela
VPN servers are usually set up using the "route and remote access" component in Windows, but the configuration is complicated. If you can integrate the network firewall and VPN functions, You can simplify the setup process and use firewall policies to enhance the security of the VPN service. Kerio Winroute Firewall (KWF) is a tool
You often use the "Routing and Remote Access" component of the Windows system to set up a VPN server, but this method configuration is more complex. If you can integrate network firewall and VPN functions, you can simplify the erection process, and you can also use firewall policies to enhance the security of VPN services. Kerio Winroute Firewall (hereinafter ref
VPN servers are usually set up using the "route and remote access" component in Windows, but the configuration is complicated. If you can integrate the network firewall and VPN functions, You can simplify the setup process and use firewall policies to enhance the security of the VPN service. Kerio Winroute Firewall (KWF) is a tool
You often use the "Routing and Remote Access" component of the Windows system to set up a VPN server, but this method configuration is more complex. If you can integrate network firewall and VPN functions, you can simplify the erection process, and you can also use firewall policies to enhance the security of VPN services. Kerio Winroute Firewall (hereinafter ref
Rd and RT (mpls vpn bgp)
Rd (route-distinguisher) is used to identify different VPN instances on the PE device. Its main function is to achieve address multiplexing between VPN instances. It and the IP address constitute a 12byte vpnv4 address space, rd and the route are carried together in the bgp update message and published to the peer end. On the one hand, we
I have recommended how to set up the PPTP VPN service in the article "VPs initial experience and self-built VPN service". This article has made some modifications and supplements based on the original article, and added"How to connect to pptp vpn on Linux.
The running environment involved in this article: the remote se
With the built-in routing and Remote Access capabilities of Windows Server systems, it's no novelty to set up a VPN server, but by this method, a series of complex and cumbersome settings are required, and it is clear that the erection of "engineering" will make many novice users discouraged! In order to be able to chat between, can let you rookie friends easily set up a
exchange application data. The warning protocol is used to terminate a session between two hosts when an error occurs. VPN (Virtual Private Network) is mainly used in virtual connection networks. It ensures data confidentiality and has certain access control functions. VPN is a very practical technology that can expand the internal network of an enterprise and allow employees, customers, and partners to ac
offices, international regions, remote computers, roaming mobile users, and business partners due to business requirements, or the network structure is changed, enterprises can expand their VPN capacity and coverage at any time by relying on the ISP that provides the VPN service.
VPN has an absolute price advantage over the leased line. Compared with ordinary
wire is a virtual network. Isn't the IP network built on a variety of LAN, Wan, and telecom networks, are virtual networks on physical networks, such as television networks? From a layered perspective, pstn can be regarded as a virtual network. vpn is of more special significance as a virtual network, and is also implemented in a variety of ways. Ip over ssl does not touch the protocol stack, nor does it a
Using the built-in Routing and Remote Access functions of the Windows server system, setting up a VPN Server is nothing new. However, when setting up a VPN Server in this way, A series of complex and cumbersome settings are required. Obviously, such a "project" will put a lot of cainiao users away! In order to make it easier for cainiao users to build a
full of security vulnerabilities. 3. Full integration. Because vpn is a network that ensures secure communication between business partners and enterprise customers, a complementary set of technologies and equipment must be fully integrated and managed in the product line. Vpn can be built using a dedicated vpn Router
businesses by the end of this century. 1.1 What is VPNThrough packets and encrypted transmission of network data, private data is transmitted on the public network to achieve the security level of the private network, so that the public network can be used to build an internal Al private network (VPN ). If the access method is dial-up, it is called VPDN.VPN establishes a private data transmission channel through the public IP network to connect remo
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