Both ends of PPPoE connection have to be on the same Ethernet LAN (strictly speaking there are ways around this, but that involves solving the same problem I think you are trying to solve). I think you may be more interested in a VPN (Virtual Private Network).
Apr 12, 2011 6 Free and Best Open source VPN Server Software Apr 27, 2018 Accel-ppp
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Apr 04, 2018 · Select the option to use your Internet connection to connect to the VPN. Enter the domain or IP address of your VPN Server (the public IP address of the DD-WRT router configured above) and give a title to the VPN connection. Enter the credentials for your VPN login which was configured in the DD-WRT router settings. Click Connect. My VPN is established over PPPoE between Asus WL-500GPv2 (VPN server) and Asus RT-N16 (VPN client) Your Asus RT-N16 is running 02/03/13 and I have 02/07/13. Sure please paste your config, perhaps we learn something. PPPoE is commonly used in a broadband aggregation, such as by digital subscriber line (DSL). PPPoE provides authentication with the CHAP or PAP protocol. In the Viptela overlay network, vEdge routers can run the PPPoE client. The PPPoE server component is not supported. Send and enforce PPPoE client static IP address during PPPoE negotiation — This option configures the device to send the PPPoE client IP address to the PPPoE server, and use the configured IP address even if another IP address is obtained from the PPPoE server. To use this option, the device must use Fireware XTM v11.8.1 or higher. Dec 11, 2019 · A VPN passthrough is a feature that allows any devices connected to the router to establish outbound VPN connections. In other words, it does what it says on the tin – it allows VPN traffic to pass because old VPN protocols, such as PPTP and LT2P (an outdated IPsec version), don’t recognize and block it. If you wish to get more information about PPPoE, please contact your Internet service provider or network administrator. VPN Here you can let your ASUSTOR NAS become a VPN client, and via PPTP or Open VPN, connect to a VPN server to access a virtual private network. Finally, add a PPPoE Server Binding interface for each user. This was an optional step with a VPN, but a named interface is a must when each user will need a queue and firewall rules. This was an optional step with a VPN, but a named interface is a must when each user will need a queue and firewall rules.