Site 2 Site VPN one way traffic

[garrd5017]

I have established a VPN connection from between an MX67 and Third Party firewall. 

computers behind the third party firewall can ping computers behind the MX67.

The computers behind the MX67 can't ping devices behind the third party firewall.

It looks like at NAT issue to me but I can't find anywhere to configure the NAT on the MX67.

Any help would be appreciated.

Thanks

David 

[alemabrahao]

How did you come to the conclusion that it is a NAT problem? It is more likely that ICMP is blocked on the other end.

[alemabrahao]

One more piece of information, it is not possible to configure NAT for a non-Meraki VPN, only for SD-WAN and support must be requested to enable the feature.

https://documentation.meraki.com/MX/Site-to-site_VPN/Using_Site-to-site_VPN_Translation