Here youcan configure Prosody <a href="https://modules.prosody.im/mod_firewall" target="_blank">mod_firewall</a> module. Youcan create multiple configuration files bellow, and change their order. Don't hesitate to share your configurations withthe community (for example by adding some examples in the plugin documentation).
Warning: mod_firewall is disabled in the livechat <a href="/admin/plugins/show/peertube-plugin-livechat" target="_blank">plugin settings</a>, you have to enable it if you want this configuration to be taken into account.