Libreswan

vs

ProtonVPN

OpenVPN is a free and open-source VPN client developed by OpenVPN Inc. The software can be used to create secure point-to-point or site-to-site connections in routed or bridged configurations and remote access facilities. OpenVPN uses custom security protocol that utilizes SSL/TLS for key exchange and is compatible with any OpenVPN protocol compatible server.

OpenConnect is an open-source SSL VPN client for Linux and Windows. OpenConnect is based upon SSL security protocol and was built as a replacement VPN client for Cisco’s AnyConnect SSL VPN. With support from the open source community it has now become the standard underlying technology for many VPN providers. With OpenConnect you can implement your own server, initiate data encryption, and import and manage server configurations.

Openswan has been a popular VPN alternative for Linux users since2005. It is an IPsec implementation with support for most of its extensions (RFC and IETF drafts), even IKEv2, NAT Traversal, X.509 Digital Certificates and more. Openswan comes packages with various Linux distributions, including Gentoo, Fedora, Ubuntu, Red Hat and others.

Private Internet Access or PIA for short, has the largest virtual private network capacity across the globe to provide the highest speeds and most encryption. The service prides it self of being privacy-focused and is the only VPN server that has a proven non-log record. Apps provided by Private Internet Access use OpenVPN and WireGuard, two of the latest, most secure protocols. OpenVPN uses AES-128 encryption by default, but you can bump that up to AES-256 in the settings. With Private Internet Access you can also set the data authentication and handshake methods, including RSA-2048 and RSA-4096.

Without a VPN service, everything you do online gets tracked, followed, and even spied on. However, when using a virtual private network, you’re virtually putting on an online invisibility cloak. With CyberGhost VPN you can utilize the power of the internet with an encrypted connection is 100% anonymous and untraceable. CyberGhost VPN is powered by over 15 years experience and over 6800 servers across the globe that will ensure personal privacy when using the web.

PureVPN is a UK-based VPN service that features kill switch and split tunneling. In total, PureVPN has more than 6,500 encrypted VPN servers and 300,000 anonymous IPs across the globe. The service allow you to choose from 4 different types of activities (Stream, Internet Freedom, Security/Privacy, and File Sharing) and tailor your current connection accordingly.