Forum OpenACS Q&A: Re: Setting server configuration parameters during runtime to avoid reboot

in general, the configuration values of AOLserver/NaviServer are designed to be not-changeable at runtime (these are implemented for speed and concurrency). Many internals and user level functions assume, that these values are constant. There are a few NaviServer components, that read initial settings from the configuration parameters, that can be changed at runtime.

How comes, that you want to change the ReverseProxyMode at runtime? This is substantial change in the configuration that deserves a restart.