Hopefully it will encourage other people to use Openwrt as an IPsec VPN router. We cannot provide a graphical user interface at the moment but at least it is a solid alternative to commercial IPsec appliances.
How to configure an L2TP/IPsec server behind a NAT-T May 01, 2019 Setting up Softether VPN on OpenWRT – Techie blog After choosing architecture head to Network->VPN. Navigate to “softethervpn” and press space two times, to enable the compilation of package. Now press ESC until you’ve arrived to the screen below. Press ENTER. It should exit the OpenWRT SDK configuration and you should be ready to compile. NB! Setup a private VPN on OpenWRT 15.05.01 using StrongSwan
After choosing architecture head to Network->VPN. Navigate to “softethervpn” and press space two times, to enable the compilation of package. Now press ESC until you’ve arrived to the screen below. Press ENTER. It should exit the OpenWRT SDK configuration and you should be ready to compile. NB!
Jul 27, 2016 DD-WRT Forum :: View topic - Site to Site ipsec VPN
Opportunistic encryption (OE) refers to any system that, when connecting to another system, attempts to encrypt the communications channel, otherwise falling back to unencrypted communications. This method requires no pre-arrangement between the two systems. Opportunistic encryption can be used to combat passive wiretapping. ( An active wiretapper, on the other hand, can disrupt encryption
Aug 13, 2019 Site-to-site VPN with OpenWrt and FRITZ!Box - Mundhenk As usual in the VPN domain, we call these networks left and right. In this setup the FRITZ!Box will form the right side, which the OpenWrt system connects to. As common for private connections, we assume that these connections have changing IP addresses and use Dynamic DNS addresses. openWRT PPTP/L2TP/iKev2 setup with Strongswan as VPN Oct 25, 2019