Hello,
I'd like to access my Plexbox when I'm not home. My home internet connection does not have a public IP address, my ISP utilizes a NAT.
So my idea is to create a VPN between my home Plexbox and my public VPS running at Linode and access the VPN from my other devices when I'm on the road on 4G or work Wi-Fi.
My Plexbox runs Ubuntu 16.04.1 LTS, so is my VPS. I followed this tutorial (https://github.com/hwdsl2/setup-ipsec-vpn#ubuntu--debian) to install L2TP/IPSec VPN server on my VPS and this tutorial to install VPN client on my Plexbox (https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients.md#linux).
Here are my copied ipsec.conf files: https://gist.github.com/ondrejmirtes/13cbe6a8425deb2da7e376f2cc45a2c8
My problem is that each client connection to the Linode VPS creates separate pppX interface with 255.255.255.255 netmask. Each client can be pinged from the server and the client can route its Internet traffic through the server, but the clients cannot access each other.
Are the clients supposed to create different kind of network interface on the server (and how should I configure them to do it?) or is the situation solvable by adding some specific route configuration?