I need to connect small branch LAN to the HQ LAN.
HQ LAN is connected to the internet using Mikrotik router with public static IP.
Branch LAN is connected to the internet via 4G LTE Router (TP-Link Archer MR200).
Router is IPSec capable and PPTP/L2TP/IPsec pass through (NAT forwarding) + other features.
Router IP assigned by ISP is private from range 10.xxx.xxx.xxx. It means it is behind ISP router with NAT.
Public IP of ISP router is changing each time the 4G LTE Router is disconnected/reconnected to the 4G network.
So question is: How can I connect these two LANs (how to configure the routers) ? Faster solution is better.
Is the IPsec VPN possible when branch router is behind ISP NAT and ISP public IP is dynamic?
In case of needed I can use in branch LAN another Mikrotik router (hAP lite).
Thanks for any hints.