Port-forward to an ingress on premise

Rancher feature to access k8s installed on premise is very cool!
So, without vpn, you can do a port forward of a pod in a customer k8s in your local pc for debugging.
Unfortunately now we need to debug a web app that calls several web apis esposed in an ingress.
We tried to port forward the ingress but it is not possible.
It is not pratical to port-forward all pods so I would like to ask if there is a better way.
It is for debug only! The customer does not need additional ingresses or load balancers.