GRE Labs, as a Layer Zero Project, likely employs a variety of security measures to ensure the integrity and safety of its on-chain user application (UA) that runs an Ultra Light Node (ULN). While specific details about GRE Labs’ security features are not readily available, it’s worth noting that projects of this nature often use established security protocols.

For instance, Generic Routing Encapsulation (GRE) tunnels are often secured with IPSec encryption1. IPSec is a collection of protocols that provide encryption for sensitive data and ensure end-to-end integrity of data1. It was used to support the encryption of unicast IP packets1.

There are two ways to implement encryption over a GRE tunnel: Crypto Maps and Tunnel IPsec Profiles1. Encrypting traffic in a GRE tunnel using crypto maps is not recommended because of its limitations which IPsec profiles have addressed1.