What is a Quick Tunnel?
Cloudflare uses the name for tunnels started with cloudflared tunnel --url, which get a random trycloudflare.com hostname that stops working when the process stops. Other services offer similar account-free tunnels over SSH.
Because they need no account and hand out disposable hostnames under a trusted domain, quick tunnels appear in published reports of malware delivery and phishing.
How LayerV Implements This
Publishing with the qURL CLI also needs no account, but the app gets no public hostname. Access is a per-recipient link that is single-use by default and expires.