Forum OpenACS Q&A: Re: Where to add X-Frame-Options headers?
What version of OpenACS are you using?
I also have the same problem trying to configure X-Frame options.
I am using an ancient and heavily modified version. However I did manage to get it working by adding those changes to packages/acs-tcl/tcl/request-processor-procs.tcl
I was able to make it work by adding them to procedure rp_filter also in packages/acs-tcl/tcl/request-processor-procs.tcl.
Will just have to run some tests to make sure nothing is broken.
Thanks a lot!