EoIP behind nat

Is it possible to setup an EoIP tunnel between two MT routers provided that one of them is directly conected to internet while the other is behind a firewall, is assigned a private IP (dynamically assigned by dhcp) and is natted to access the internet?
TIA.

abel

as long as you allow and NAT GRE (proto 47) to the endpoint it should work.

EoIP inside L2TP can.