How to set up L2TP/IPsec VPN on Linux (using NetworkManager & strongSwan)

Although the L2TP/IPsec VPN protocols were primarily developed by Microsoft and Cisco, there are open source alternatives that work well in Linux. L2TP/IPsec is an older VPN protocol but it is still quite popular despite the Snowden revelations that the NSA may have deliberately weakened the protocol. It supports various encryption ciphers and is built-in […]