Open a new Terminal session. Download the VPN profile for the gateway. This can be done from the Point-to-site configuration tab in the Azure portal. Export the P2S client certificate you created and uploaded to your P2S configuration on the gateway.
Using OpenSSL on your computer is one way. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Please rate your experience Yes No. Any additional feedback? Important Only iOS Submit and view feedback for This product This page.
View all page feedback. In this article. If you are not hosting web content on your OpenVPN server, port is a popular choice since it is usually allowed through firewall rules. To change OpenVPN to listen on port , open the server. Oftentimes, the protocol is restricted to that port as well. If so, find the proto line below the port line and change the protocol from udp to tcp :. Find the explicit-exit-notify line at the end of the file and change the value to 0 :.
If you have no need to use a different port and protocol, it is best to leave these settings unchanged. If you selected a different name during the. If you used the default name, server , this is already set correctly:. You have now finished configuring your OpenVPN general settings. The first of these is IP forwarding , a method for determining where IP traffic should be routed.
This is essential to the VPN functionality that your server will provide. Now your OpenVPN server will be able to forward incoming traffic from one ethernet device to another. This setting makes sure the server can direct traffic from clients that connect on the virtual VPN interface out over its other physical ethernet devices. In the next step you will need to configure some firewall rules to ensure that traffic to and from your OpenVPN server flows properly.
However, you have not yet provided OpenVPN with any instructions on where to send incoming web traffic from clients. You can stipulate how the server should handle client traffic by establishing some firewall rules and routing configurations. Assuming you followed the prerequisites at the start of this tutorial, you should already have ufw installed and running on your server.
Before opening the firewall configuration file to add the masquerading rules, you must first find the public network interface of your machine. To do this, type:. For example, this result shows the interface named eth0 , which is highlighted below:. UFW rules are typically added using the ufw command. Rules listed in the before. Towards the top of the file, add the highlighted lines below. Next, you need to tell UFW to allow forwarded packets by default as well. Next, adjust the firewall itself to allow traffic to OpenVPN.
In case you forgot to add the SSH port when following the prerequisite tutorial, add it here as well:. Note : If you are using a different firewall or have customized your UFW configuration, you may need to add additional firewall rules. If there are other protocols that you are using over the VPN then you will need to add rules for them as well.
Your server is now configured to correctly handle OpenVPN traffic. With the firewall rules in place, we can start the OpenVPN service on the server. OpenVPN runs as a systemd service, so we can use systemctl to manage it. To do this, enable the OpenVPN service by adding it to systemctl :.
Double check that the OpenVPN service is active with the following command. You should see active running in the output:. Rather than writing a single configuration file that can only be used on one client, this step outlines a process for building a client configuration infrastructure which you can use to generate config files on-the-fly.
Get started by creating a new directory where you will store client configuration files within the client-configs directory you created earlier:. Next, copy an example client configuration file into the client-configs directory to use as your base configuration:. Inside, locate the remote directive. If you decided to change the port that the OpenVPN server is listening on, you will also need to change to the port you selected:.
Next, uncomment the user and group directives by removing the ; sign at the beginning of each line:. Find the directives that set the ca , cert , and key. Comment out these directives since you will add the certs and keys within the file itself shortly:. Similarly, comment out the tls-auth directive, as you will add ta. Next, add the key-direction directive somewhere in the file. The first set is for clients that do not use systemd-resolved to manage DNS.
These clients rely on the resolvconf utility to update DNS information for Linux clients. Now add another set of lines for clients that use systemd-resolved for DNS resolution:. Later in Step 13 - Installing the Client Configuration step of this tutorial you will learn how to determine how DNS resolution works on Linux clients and which section to uncomment. This script will make a copy of the base. The benefit of using this method is that if you ever need to add a client in the future, you can run this script to quickly create a new config file and ensure that all the important information is stored in a single, easy-to-access location.
Please note that any time you add a new client, you will need to generate new keys and certificates for it before you can run this script and generate its configuration file. You will get some practice using this script in the next step. If you followed along with the guide, you created a client certificate and key named client1.
This will create a file named client1. You need to transfer this file to the device you plan to use as the client. For instance, this could be your local computer or a mobile device. This will copy the client1. Here are several tools and tutorials for securely transferring files from the OpenVPN server to a local computer:. None of these client instructions are dependent on one another, so feel free to skip to whichever is applicable to your device. The OpenVPN connection will have the same name as whatever you called the.
In regards to this tutorial, this means that the connection is named client1. Choose the appropriate installer version for your version of Windows. Note : OpenVPN needs administrative privileges to install. To do this without having to right-click and select Run as administrator every time you use the VPN, you must preset this from an administrative account. To set the OpenVPN application to always run as an administrator, right-click on its shortcut icon and go to Properties.
At the bottom of the Compatibility tab, click the button to Change settings for all users. In the new window, check Run this program as an administrator. Click Yes. This opens the context menu. A status window will open showing the log output while the connection is established, and a message will show once the client is connected. You can download the latest disk image from the Tunnelblick Downloads page.
Double-click the downloaded. Towards the end of the installation process, Tunnelblick will ask if you have any configuration files. An example client configuration file is shown below:. It looks something like this:. A systemd service instance named openvpn server is active and running. To check its status, issue the command:. Right-click on the Windows start button, and open Windows PowerShell. On Windows 11, it is the default application when you select Windows Terminal.
Enter your password or, if you are an SSH key instead of a password, the passphrase for your key. There are many ways to install and configure a firewall on a Debian Linux server. How you open the firewall for OpenVPN depends on how you created your firewall in the first place and what rules you have already created. You will need to adapt the following guidelines to your environment.
Persist your new rules across reboots. One way to do this is by installing the iptables-persistent package. If you have already installed iptables-persistent , you can do the same thing by reconfiguring it:. Add a table and postrouting rules to perform Network Address Translation NAT on packets that have passed through the server:. Most Linux systems are configured so that, by default, the kernel is not allowed to forward packets.
This is a security measure. However, for a VPN, you usually want to enable packet forwarding in the Linux kernel. The CA key passphrase is mandatory, so enter and confirm a new CA key passphrase. Choose a name for your server. We will use the example of server0. Generate a certificate request with no encryption of the private key:.
0コメント