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Историческую версию OpenSSL VPN можно получить на Android
VPN-сервер openconnect (ocserv)
Base on OpenConnect VPN an SSL VPN client initially created to support Cisco's AnyConnect SSL VPN. It has since been ported to support the Juniper SSL VPN (which is now known as Pulse Connect Secure), and the Palo Alto Networks GlobalProtect SSL VPN.