The latest 8.1.9 early access build includes a new capability to opt-into making Ignition reverse-proxy-aware. The user manual still need to catch up, but for now, you can refer to Jetty’s ForwardedRequestCustomizer’s javadoc page for which headers Ignition respects. For additional detail, see: Nightly 8.1 Changelogs - 2021 - #128 by sreis