Next, you will need to create a certificate and key for the VPN server so that the client can verify the server’s authenticity using the CA certificate we just generated.įirst, create a private key for the VPN server with the following command: ipsec pki -gen -size 4096 -type rsa -outform pem > Next, create your root certificate authority and use the above key to sign the root certificate: ipsec pki -self -in ca.key.pem -type rsa -dn "CN=VPN Server CA" -ca -lifetime 3650 -outform pem > ca.cert.pem Now you will need to generate the VPN server certificate and key for the VPN client to verify the authenticity of the VPN server.įirst, generate a private key for self-signing the CA certificate using a PKI utility: ipsec pki -gen -size 4096 -type rsa -outform pem > ca.key.pem Step 4 – Setting Up a Certificate Authority Once the installation is completed, you can proceed to the next step. You can install it by simply running the following command: apt-get install strongswan libcharon-extra-plugins strongswan-pki -y Then, run the following command to reload the settings: sysctl -p Step 3 – Install strongSwanįirst, you will need to install the strongSwan IPSec daemon in your system. You can configure it by editing the file /etc/nf: nano /etc/nfĪdd the following lines at the end of the file: _forward = 1 apt-get update -y Step 2 – Enable Kernel Packet Forwardingįirst, you will need to configure the kernel to enable packet forwarding for IPv4. Once you are logged in to your Ubuntu 18.04 server, run the following command to update your base system with the latest available packages. Connect to your Cloud Server via SSH and log in using the credentials highlighted at the top of the page. Create a new server, choosing Ubuntu 18.04 as the operating system with at least 1GB RAM. Step 1 – Create an Atlantic.Net Cloud Serverįirst, log in to your Atlantic.Net Cloud Server. A root password configured on your server.A fresh Ubuntu 18.04 VPS on the Atlantic.Net Cloud Platform.In this tutorial, we will show you how to install and configure strongSwan VPN on Ubuntu 18.04. strongSwan stands for Strong Secure WAN and supports both versions of automatic keying exchange in IPsec VPN, IKE V1 and V2. StrongSwan uses the IKEv2 protocol, which allows for direct IPSec tunneling between the server and the client. StrongSwan is free, open-source, and the most widely-used IPsec-based virtual private network implementation, allowing you to create an encrypted secure tunnel between two or more remote networks. You can connect to remote VPN servers using the encrypted connection and surf the web anonymously. This should give you the first result from which is the website used for hosting PPA related code.A VPN allows you to access the Internet safely and securely on an untrusted public Wi-Fi network. Use Google or a Google alternative search engine like Duck Duck Go and search for “ppa numix”. It is a PPA repository and you may easily find its webpage. In the example here, the error complained about. This could be the tricky part but you can figure it out with some patience and effort. Now the next thing you can do is to go to the website of the software in question. How to know if the PPA/third party is available for your Ubuntu version įirst you should check your Ubuntu version and its codename using ‘lsb_release -a’ command: :~$ lsb_release -aĪs you can see, the codename it shows is focal. These two articles will give you a better, in-depth knowledge of the topic. Why so? Because probably you are using a new version of Ubuntu and the developer has not made the software available for this new version.Īt this point, I highly recommend reading my detailed guides on PPA and Ubuntu repositories. The error is basically telling you that though you have added a third-party repository to your system’s sources list, this new repository is not available for your current Ubuntu version. The “focal” in the error message indicates Focal Fossa which is Ubuntu 20.04. For Ubuntu 20.04, the codename is Focal Fossa. You probably already know that each Ubuntu release has a codename. The important part of this error message is “focal release”.
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