openvpn china

The recent OpenVPN service abnormal quit many times, because the original in order to troubleshoot problems record a large number of debug log, resulting in problems when you want to locate the problem is very difficult, the instant log was brushed off, the process dropped, instantaneous start, instantaneous and dropped, resulting in a lot of orders lost! Because the day file records too much useless information, dare not to search the log to locate t

VPN is a virtual private network, is provided to the enterprise or between the individual and the company security data transmission between the tunnel, OpenVPN is the Linux open source VPN leader, provides the good performance and the friendly user GUI, uses the OpenSSL library encryption and the authentication function. Supports UDP and TCP protocols and provides two kinds of virtual network interfaces: Tun/tap mode. The following is the installatio

Configure openvpn in Ubuntu First, make sure that the apt-Get of ubuntu can find the openvpn package.Sudo apt-Get update Install openvpn packageSudo apt-Get install openvpn Create an openvpn configuration file. The example can be found in the following path:/Usr/share/doc/

OpenVPN Increase the script for logging user log Cat connect.sh #!/bin/bash time= ' Date +%f ' if [-f/etc/openvpn/log/openvpn_$time.log];then touch / Etc/openvpn/log/openvpn_$time.log echo "' Date ' +%f%h:%m:%s ' User $common _name trust_ip $trusted _ip is login, REMOTE_IP is $ifconfig _pool_remote_ip, Mask is $route _netmask_1 ">>/etc/

By simply using the openvpn proxy, all traffic on the local machine will go through the Remote VPN Server. However, when we roll over the wall, it is generally the traffic webpage, that is, as long as the http traffic goes through the VPN. Openvpn combined with squid's http forward proxy can provide the wall-over function for Web browsing, while other traffic such as QQ and thunder still follows the normal

VPN protocols: PPTP, L2TP, and OpenVPN1. Concepts of PPTP, L2TP, and OpenVPN Tunneling Protocols 1. Default port number of PPTP (Point to Point Tunneling Protocol): 1723 PPTP, or PPTF Protocol. This protocol is a new enhanced security protocol developed on the basis of the PPP protocol. It supports multi-protocol Virtual Private Network (VPN) and can pass the password authentication protocol (PAP) and Extended Authentication Protocol (EAP) to enhance

First, the working principle of OpenVPN VPN technology establishes a private tunnel on the public network through key exchange, encapsulation, authentication and encryption, which guarantees the integrity, privacy and effectiveness of the transmitted data. OpenVPN is a new open source project emerging in recent years, which realizes a sslvpn solution. Traditional SSL VPN through the port proxy method, the

Article title: openvpn manages multiple configuration files. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. After the company's network has been adjusted recently, there are three vpn connections that need to be used. according to the default configuration, it seems th

After completing the OpenVpn Bridge Mode experiment under UbuntuServer10.04, this experiment on the routing mode involves two modes: the bridging mode and the routing mode, let's take a look at the differences between the two modes. The above content is available on the Internet. I just organized them into tables to make it easier to compare and understand. Experiment environment: (1) topology: (2) The two routers are simulated using the Dynamips simu

Install Openvpn in Ubuntu 14.04Install Openvpn in Ubuntu 14.04--------------------------- Download and install openvpn ----------------------------------- Install openvpn and other necessary plug-ins # Apt-get install openvpn libssl-dev openssl Install easy-rsa

First, what is OpenVPN Static Key According to the official document, the Static Key approach is a point-to-point (point-to-point) VPN. Second, the advantages of OpenVPN Static Key 1. Easy installation2, easy to use, Windows, OS X, Linux can be used by the official client3, adopt the UDP way, the connection is more stable Third, the OpenVPN Static Key's disad

OpenVPN Optimization-Establishment of TLS handshake Control CHannelAn optimization of the OpenVPN data tunnel is in progress. After referring to the concept and idea of the "giant frame", I carefully considered the design and implementation of the TCP/IP protocol stack, so I come up with a possible error, but at least it is very practical in my scenario: although the upper-layer protocol sends data, it does

Company demand: Need to build a OpenVPN in the Japanese server, and then through the proxy way to visit foreign sites. Server IP: [root@li493-137 ~]# Ifconfig Eth0 Link encap:ethernet hwaddr f2:3c:91:ae:0a:55 inet addr:57.17.20.30 bcast:57.17.20.255 mask:255.255.255.0 Inet6 ADDR:2400:8900::F03C:91FF:FEAE:A55/64 Scope:global Inet6 ADDR:FE80::F03C:91FF:FEAE:A55/64 Scope:link Up broadcast RUNNING multicast mtu:1500 metric:1 RX packets:4620022758

OpenVPN DoS Vulnerabilities (CVE-2014-8104) Release date: 2014-12-01Updated on: 2014-6 6 Affected Systems:OpenVPN OpenVPN Access Server Description:Bugtraq id: 71402CVE (CAN) ID: CVE-2014-8104 OpenVPN is an open-source ssl vpn toolkit. In versions earlier than OpenVPN 2.3.6 and earlier than

Openvpn itself can use an HTTP proxy. That is to say, the openvpn client does not directly connect to the openvpn server, but uses an HTTP proxy for connection. This feature is the peripheral feature of openvpn, not its core, but it can solve many practical problems. It is equivalent to another tunnel outside the tunne

Centos6.3 openvpn client Centos does not provide Openvpn by default, and there is no openvpn in The yum source. if you want to use yum for installation, install EPEL first. Www.2cto. comShell code wgethttp: // apt. sw. be/redhat/e... Centos6.3 openvpn client Centos does not provide

After openvpn has the setenv and reverse push-peer-info that can be pushed, it can theoretically implement bidirectional push of any information, which is too convenient. However, convenience requires a price, that is, it is prone to confusion, errors, and the lack of security. In this world, there are two groups that are hostile to each other. One is how to make nodes more interconnected, and the other is how to control access to communications. In o

Openvpn Bridge Mode in freebsd is probably the most popular semi-non-standard cross-platform VPN solution, with a large number of users and a pure userland implementation. it's pretty easy to set up, but I often forget certain steps so here's a tutorial for me to rememeber in the future :) Keywords: FreeBSD, OpenVPN, networkingI call OpenVPN semi-non-standard bec

Run multiple openvpn clients-linux Enterprise Application-Linux server application information on a Linux machine at the same time. The following is a detailed description. The server configuration is as follows: Port 1194 Proto tcp Dev tun Ca/etc/openvpn/keys/ca. crt Cert/etc/openvpn/keys/vpnserver. crt Key/etc/openvpn