I need to setup a multipoint GRE tunnel with NHRP to our core router for a customer. I’m trying to achieve this with the DMVPN service on a Teltonika RUTX09 but i need to specify IPSEC settings. As we do not use IPSEC for this specific tunnel interface on our core router i need to set this up without it on the Teltonika.
Is it possible to achieve this in the WebGUI or only in the CLI?
The easiest option would be to configure DMVPN normally, and then navigate to Network → Routing → Dynamic Routes → NHRP (tab) → Edit your instance → Disable IPSec support: