To use the Gateway V2 (VPN), you will need to install the CloudFlare WARP client. Instructions on how to do so can be found here: CloudFlare Documentation.
Installing the Dockerized Cloudflare WARP Client
For use with Gateway V2
The Dockerized Cloudflare WARP Client automates the installation of the Cloudflare WARP client and the Root CA in a Docker container to connect to the HackerOne Gateway. It also allows simultaneous connections to several programs by initiating proxies for each program on different ports.
To install the Dockerized WARP Client, clone HackerOne’s h1-vpn repository and follow the installation and configuration instructions in the README file.