How to Setup OpenVPN on Linux (Ubuntu)

Installing the Server

Add VPN on client computer (Mac)
Run ifconfig and find your default interface, in my case it was br0 I changed it to allow virtual machines on my physical machine to share the interface. There are several methods for managing the client files but the easiest uses a unified profile. TLS handshake failed Mon 4 July 3: First, install the openvpn client, enter: CMD 'state on' Thu Oct 06 Uncomplicated Firewall ufw ufw is a front-end for iptables and setting up ufw is not hard.

Download openvpn-install.sh script to setup OpenVPN server in 5 minutes on Ubuntu

How To Setup OpenVPN Server In 5 Minutes on Ubuntu Linux

What is a bridged VPN? A bridged VPN allows the clients to appear as though they are on the same local area network LAN as the server system. The VPN accomplishes this by using a combination of virtual devices -- one called a "bridge" and the other called a "tap device".

A tap device acts as a virtual Ethernet adapter and the bridge device acts as a virtual hub. When you bridge a physical Ethernet device and a tap device, you are essentially creating a hub between the physical network and the remote clients.

Therefore, all LAN services are visible to the remote clients. This example installation was performed using Ubuntu Jeos 8. In my configuration eth0 is connected to the Internet and eth1 is connected to the LAN network that will be bridged. Comments in configuration files are preceeded by two pound signs. For more information, see interfaces 5. The loopback network interface auto lo eth0 iface lo inet loopback The primary network interface This device provides internet access. This is the network bridge declaration Start these interfaces on boot auto lo br0 iface lo inet loopback iface br0 inet static address Please add more instructions here.

Launching the OpenVPN client application only puts the applet in the system tray so that the VPN can be connected and disconnected as needed; it does not actually make the VPN connection. This opens the context menu.

Select client1 at the top of the menu that's our client1. A status window will open showing the log output while the connection is established, and a message will show once the client is connected. Disconnect from the VPN the same way: Go into the system tray applet, right-click the OpenVPN applet icon, select the client profile and click Disconnect. You can download the latest disk image from the Tunnelblick Downloads page.

Towards the end of the installation process, Tunnelblick will ask if you have any configuration files. It can be easier to answer No and let Tunnelblick finish. Open a Finder window and double-click client1. Tunnelblick will install the client profile. Administrative privileges are required.

Launch Tunnelblick by double-clicking Tunnelblick in the Applications folder. Once Tunnelblick has been launched, there will be a Tunnelblick icon in the menu bar at the top right of the screen for controlling connections. Click on the icon, and then the Connect menu item to initiate the VPN connection. Select the client1 connection.

If you are using Linux, there are a variety of tools that you can use depending on your distribution. Your desktop environment or window manager might also include connection utilities.

Uncomment the three lines we placed in to adjust the DNS settings if you were able to find an update-resolv-conf file:. If you are using CentOS, change the group from nogroup to nobody to match the distribution's available groups:.

Now, you can connect to the VPN by just pointing the openvpn command to the client configuration file:. To transfer your iOS client configuration onto the device, connect it directly to a computer. Completing the transfer with iTunes will be outlined here. There will be a notification that a new profile is ready to import. Tap the green plus sign to import it. OpenVPN is now ready to use with the new profile. Start the connection by sliding the Connect button to the On position.

Disconnect by sliding the same button to Off. If you try, you will receive a notice to only connect using the OpenVPN app. Open the Google Play Store. Alternatively, if you have an SD card reader, you can remove the device's SD card, copy the profile onto it and then insert the card back into the Android device. The app will make a note that the profile was imported. To connect, simply tap the Connect button.

You'll be asked if you trust the OpenVPN application. Choose OK to initiate the connection. Once everything is installed, a simple check confirms everything is working properly.

The site will return the IP address assigned by your internet service provider and as you appear to the rest of the world. That is now how you appear to the world. Occasionally, you may need to revoke a client certificate to prevent further access to the OpenVPN server. This will show some output, ending in error This is normal and the process should have successfully generated the necessary revocation information, which is stored in a file called crl. At the bottom of the file, add the crl-verify option, so that the OpenVPN server checks the certificate revocation list that we've created each time a connection attempt is made:.

The client should now longer be able to successfully connect to the server using the old credential. This process can be used to revoke any certificates that you've previously issued for your server. You are now securely traversing the internet protecting your identity, location, and traffic from snoopers and censors.

To configure more clients, you only need to follow steps 6 , and for each additional device. To revoke access to clients, follow step English Spanish Portuguese Russian. We hope you find this tutorial helpful. In addition to guides like this one, we provide simple cloud infrastructure for developers.

Not using Ubuntu Choose a different version: Introduction Want to access the Internet safely and securely from your smartphone or laptop when connected to an untrusted network such as the WiFi of a hotel or coffee shop? Prerequisites To complete this tutorial, you will need access to an Ubuntu To update your server's package index and install the necessary packages type: To begin, we can copy the easy-rsa template directory into our home directory with the make-cadir command: Configure the CA Variables To configure the values our CA will use, we need to edit the vars file within the directory.

Open that file now in your text editor: It should look something like this: Enter a passphrase twice, then you have a. You can send John. If you need any more user certificates, repeat the above steps with other user data. You can also do this later on.

If a certificate is lost or stolen, it must be revoked so nobody can use it to connect to your VPN server. Assuming the certificate from the previous step got stolen, we revoke it with:.

When someone tries to authenticate with the stolen certificate, he'll receive an authentication credentials error message, and your log file will contain something like:. To add another revoked certificate to the same list, we need to copy the existing list into a temporary file:.

We are going to edit it:. This is, as stated above, the most secure method. Older tutorials also set up IKEv1 xauth and username-password combo, but that is considered insecure. Apple added support for IKEv2 in iOS 8, but it needs to be configured using a custom configuration profile.

You also need to enter that on the devices, otherwise you'll get a no matching peer config found log error. We use a strong ciphersuite. On Android, the easiest way is to install the StrongSwan app , copy over the. This tutorial is available for the following platforms: To work trough this tutorial you should have: Overview The tutorial consists out of the following steps: You might want to install haveged to speed up the key generation process: Start by creating a self singed root CA private key: RSA bits keyid: First the private key: Let's view the certificate: Xv3 Authority Key Identifier: This file holds shared secrets or RSA private keys for authentication.

RSA private key for this host, authenticating it to any other host which knows the public part. You can check afterwards if StrongSwan has the private key available with the ipsec listcerts command:

Step 1: Install OpenVPN