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
Article title: use Openbsd and Openvpn to quickly establish an enterprise VPN. 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.
Use openbsd + openvpn to quickly establish an enterprise vpn
Openvpn can work in two modes:
One is
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
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
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
Build openvpn based on user password authentication on CentOS 6.6 x64
I. Deployment
For more information about the deployment, see my previous article. Here we will simply modify the previous article.
Http://www.centoscn.com/image-text/config/2015/0717/5874.html
Ii. Modification
# Vim/etc/openvpn/server. conf
Add the following lines of data at the end of the configuration file:
Script-security 3 system
Au
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
Directory
1. Install
2. Set up a serious organization to generate a certificate
3. Configure the server
4. Configure the client
1. InstallInstall in UbuntuOpenvpnExtremely simple:
Code:
Sudo apt-Get installOpenvpn
We recommend that you useOpenvpnGUI for Windows installation package, which includesOpenvpnAnd a user-friendly GUI in windows.
2. Set up a serious organization to generate a certificateReferenceOpenvpnIn general, there is no problem.In ubuntu, the direct
event will be audited as an exception event, as it seems normal, since it is necessary to maintain a persistent connection, it should not be disconnected. Now it is disconnected, and that is not necessary. Second, for those environments where bandwidth is scarce resources, heartbeat packets occupy considerable resources, such as 3G users, without actual data transmission, the heartbeat packets sent will be completely wasted.
Why does VPN need to maintain a persistent connection? Isn't it easy t
Server Configuration
1 , Installation
Openvpn
Rpm-IVHHttp://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm
Yum install openvpn-y
Of course, you can also download from this page:Http://openvpn.net/index.php/download.html
2 , Configure the server
2.1 Initialize the server
CD/etc/openvpn/
CP/usr/share/doc/
A few weeks ago, Canonical released the Ubuntu 14.04 LTS version. The new operating system has undergone great changes, but some problems still need to be solved, such as the openVPN import function.
If you have used a VPN connection on Ubuntu, you should know that you have to download the network-manager-openvpn package from the official software package management center to achieve the VPN connection, it
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
Enable Password Authentication for OPENVPN
1. Server Configuration
1. Modify the main configuration file of openvpn and add the following content:
[Root @ ttt openvpn] # cat/etc/openvpn/server. conf | more
######### Auth password ########Script-security 3 ### -- add script processing, such as password verificationAuth-
OpenVPN multi-processing-why notOpenVPN does not handle much. It is well known. I think it is a bit cool to say this every day. Why didn't I handle it more? Let's take a look at how James Yonan (JY for short), author of OpenVPN, has already exceeded code.OpenVPN 2.0 has no multithreading support, this is the only feature present inWell, it clearly shows that the OpenVPN
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.com Shell code wget http://apt.sw.be/redhat/el6/en/i386/rpmforge/RPMS/rpmforge-release-0.5.2-2.el6.rf.i686.rpm Shell code rpm-Uvh rpmforge-release-0.5.2-2.el6.rf.i686.rpm after instal
The main configuration processes are:
1. Download OpenVPN software to App Store
2, after downloading, connect to the PC, your OpenVPN service provider's configuration file into
Click the Add button and select File to join.
3, at this time running the iOS side of the OpenVPN client
The software will automatically identify the
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