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Rotten mud: ubuntu 14.04 OpenVPN server, 14.04 openvpn

Rotten mud: ubuntu 14.04 OpenVPN server, 14.04 openvpn This article is written by Xiuyi Lin FengProviding friendship sponsorship, first launched in the dark world The company branch needs to connect to the company's internal server, but the server only allows access to the company's internal network. To solve this problem, we plan to use VPN. PPTP is the most widely used solution for VPN in the past, but

Mud: openvpn configuration file details, openvpn configuration file

Mud: openvpn configuration file details, openvpn configuration file This document consistsXiuyi Lin FengProviding friendship sponsorship, first launchedThe world In the previous article "build OpenVPN server in ubuntu 14.04", we mainly explained how to build and use openvpn. In this article, we will detail the config

Openvpn simple document

connection, therefore, we have to use net30 to simulate a P2P link. For example, for the client, the Tun address configuration is:10.8.0.6 Server Configuration:10.8.0.1 Here ,. 5 and. 2 addresses are used to simulate P2P. for the client ,. 5 is the server, and for the server ,. 2 is the client, so these simulated addresses are only used inside openvpn and invisible to the outside world. In this way, a virtual P2P link can be configured on the Tap-WIN

Openvpn performance-the first bottleneck of openvpn lies in the Tun driver.

The first bottleneck of openvpn is that the Tun character device reads and writes frames at one link layer. The reason why the user-mode openvpn process must have the same link-MTU on both ends, it is because each time openvpn reads a complete Ethernet frame from the/dev/NET/TUN character device, there are not many, and the library interface: ssize_t read (int fd

Centos6.4 quickly build an openvpn server based on user name and password authentication

Centos6.4 quickly build an openvpn server based on user name and password authentication Today, VPN applications are widely used. I have previously written a blog on PPTPD. The link is http://cyr5425blog.51cto.com/714067/4101788. The home has recently changed a new broadband. You cannot use the company's PptpdVPN. the dialing status remains at the step of verifying the user name and password. Baidu and Google did not solve this problem. This seems to

OpenVPN-ng: The application-layer tunnel for Mobile Life, And openvpn-ng Application Layer

OpenVPN-ng: The application-layer tunnel for Mobile Life, And openvpn-ng Application LayerVPN makes people think that it is always a good thing and a way to escape from supervision. In fact, VPN has become the only synonym for escaping from supervision. You see, no matter what technology, IPSec, or WEB Proxy, as long as it is the technology that encrypts the original information, it can all be called VPN, s

OpenVPN Optimization-Establishment of TLS handshake Control CHannel

method is simple, that is, adding a counter in x_msg to get the millisecond value. The time difference is calculated after the SSL handshake is complete. Why does the native code set the MTU of the control channel to 100? Because the MTU values at both ends must be consistent, there is no way to negotiate before the control channel is established. Discussion during testing I use OpenVPN to transmit big data and aim to calculate a performance value. I

OpenVPN advanced Routing Technology

. Does C2C look like the ip_forward Kernel Parameters in linux? Note: in the previous sections, I have been talking about the destination address, but not the destination IP address. This is because the internal routing of OpenVPN is not only IP routing, but also in the tap mode, its internal route is actually a link layer route. At this time, the OpenVPN server is not a

OpenVPN server configuration file), openvpn configuration file

OpenVPN server configuration file description (transfer), openvpn configuration file This article describes how to configure the configuration file on the OpenVPN server. In Windows, this configuration file is generally called server. ovpn. in Linux/BSD, this configuration file is generally called server. conf. Although the configuration file name is different, t

Graph Tutorial on building a vpn server using openvpn in CentOS

Today, I saw someone in the group talking about openvpn. I just had a holiday at home, so I just studied it. I used the openvpn client when I was a little white two years ago when I was in the old unit and connected to the headquarters OA. I felt that the project should be usable in the future, SOgoogle has a lot of pieces of information on the Internet, and it has been around for a long time. according to

CentOS 7 steps to install OpenVPN

Check system environment [Root@ss-usa-odo01 ~]# Cat/etc/redhat-release CentOS Linux release 7.0.1406 (Core) [Root@ss-usa-odo01 ~]# DF-HP FileSystem Size Used Avail use% mounted on /DEV/PLOOP12288P1 30G 484M 28G 2%/ Devtmpfs 256M 0 256M 0%/dev Tmpfs 256M 0 256M 0%/dev/shm Tmpfs 256M 88K 256M 1%/run Tmpfs 256M 0 256M 0%/sys/fs/cgroup [Root@ss-usa-odo01 ~]# Cat/dev/net/tun Cat:/dev/net/tun:file Descriptor in [root@ss-usa-odo01 ~]# grep ipaddr/etc/sysconfig/network-sc

Openvpn Summary based on linux operating system architecture

Based on the linux operating system architecture openvpn Summary-Linux Enterprise Application-Linux server application information, the following is a detailed description. Use OPENVPN to connect data centers 1 1 status quo 2 2 network structure 2 3. server information and network security 4 3.1 server information 4 3.2 Network Security 4 4 Use openvpn for

OpenVPN Optimization-Establishment of TLS handshake Control CHannel

consistent! After all, the control channel is not set up and everything cannot be negotiated! Frame_set_mtu_dynamic (frame, 0, SET_MTU_TUN );} PAYLOAD_SIZE_DYNAMIC ( multi-> opt. frame), which is the result set by frame_set_mtu_dynamic. During the test, I transmitted big data through OpenVPN to calculate a performance value. For comparison, I disabled the OpenVPN process but did not remove the machine. Pre

Build openvpn server in Centos6.5

Build openvpn server in Centos6.5 Because the new version of openvpn does not contain the most important certificate preparation part: easy-rsa, You need to download easyrsa in advance and download it on GitHub. The configuration process will be shown in the following step, this deployment uses the easy-rsa3, And the easy-rsa2.0 operation is completely different, other online on the easy-rsa2.0 of the tutor

Deploy openvpn service on RHEL5.4

I. openvpn introduction openvpn is an SSL-based vpn. it uses the industrial standard SSL/TLS protocol to implement the Layer 2 and Layer 3 secure data link VPN. it has the following advantages: 1. based on the SSL protocol, security, and using a single TCP or UDP port can achieve 2. using two-way authentication... I. INTRODUCTION to openvpnOpenvpn is an SSL-based vpn. it uses the industrial standard SSL/TLS

OpenVPN construction and related configuration in CentOS6.3

OpenVPN construction and related configuration in CentOS6.3 I. background Because the company does a lot of business, it is divided into network companies and other business companies, that is, several companies are separated, not in the same place, then some data of the network company needs to be accessed by other business companies, that is, shared data can also be accessed by everyone. Many of the data shared by the network company is stored on th

Build an OpenVPN service environment using CentOS

Build an OpenVPN service environment using CentOS I will not say much about the purpose of the OpenVPN environment, because friends who see this information should understand and need to use this tutorial. This tutorial has been prepared by @ qingliu for several hours. After multiple reinstallation drills, you can install and use it. The VPS environment is based on CENTOS6, if you want to install it, take a

Openvpn construction in linux

Openvpn construction in linuxTags: original vpn files, which can be reprinted. During reprinting, you must use hyperlinks to indicate the original source, author information, and this statement. Otherwise, legal liability will be held. Http://304076020.blog.51cto.com/7503470/1605312 Lab EnvironmentSystem: centos 6.5Hostname: openvpn-serverIp: 192.168.1.236 Installation Package address: http://down.51cto.com

Establish OpenVPN network based on system user name authentication in OpenBSD

Author: linyin (linyin.8800.org) is from Linyinblog. Implementation environment: # uname-aOpenBSDlinyin.8800.org4.3GENERIC.MP #0i386 #/usr/local/sbin/openvpn -- versionOpenVPN2.0.9i386-unknown-openbsd4 author: linyin (linyin.8800.org) Source:Linyin blog. Implementation environment: # Uname- OpenBSD linyin.8800.org 4.3 GENERIC. MP #0 i386 #/Usr/local/sbin/openvpn -- version

Openvpn construction in linux and linuxopenvpn Construction

Openvpn construction in linux and linuxopenvpn ConstructionTags: original vpn files, which can be reprinted. During reprinting, you must use hyperlinks to indicate the original source, author information, and this statement. Otherwise, legal liability will be held. Http://304076020.blog.51cto.com/7503470/1605312 Lab EnvironmentSystem: centos 6.5Hostname: openvpn-serverIp: 192.168.1.236 Installation Package

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