Then you need to open the C2S port (by default `52822`, but check the plugin settings to get the current value) in your firewall so that it can be reached from the internet.If you don't want to use C2S connections for anything else than your Matterbridge service, you should restrict access to this port to your Matterbridge server IP.
In case you are using a port other than `5222` (XMPP standard port) you also need to set the [xmpp-client SRV record](https://prosody.im/doc/dns#srv_records) to the correct port.
This chat module is based on the XMPP protocol, also known as Jabber.It is therefore possible to connect to the chats using [XMPP client software](https://en.wikipedia.org/wiki/XMPP#Clients).This can for example be useful to facilitate moderation operations.
For the user documentation associated with these features, please refer to the [user documentation page](/peertube-plugin-livechat/documentation/user/xmpp_clients/).
Enabling these features requires configuration changes on the server, and on the DNS records.It is not possible to configure this only from the Peertube interface, and it requires some basic system some basic system admin skills.