Thank you hek.
Problem here is to serve Wordpress and NodeBB using proxy and not a problem with firewall.
I have installed the emoji extended plugin in nodebb v0.7.0 and the faces don't appear properly.
You can see below, this is a part of a post:
Can anyone help me with this?
Please check the
url attribute within your config.json (within NodeBB root).
See https://community.nodebb.org/topic/3392/config-json-updated-base_url-and-relative_path-no-longer-exist/10 for more details on this.
Thank you very much for your reply!