Argo Tunnel doesn't work


I have two problem:

  1. I am using iptables to forward to my website server B.
    server A: iptables forward to server B (DNS point to server A)
    server B: original website server

Under this scenario, Argo Tunnel will work?
I start cloudflared service on server A, but doesn’t work.

  1. I also start cloudflared service on original website server B, but why all requests are 403 Forbidden, please refer the attachment.