Auto ban anonymous IP:

* New settings: "Ban anonymous user's IP when user is banned from a chatroom":
  * if enabled, every time a streamer bans an anonymous user, it will ban its IP on the chat server,
  * banned IPs are logged on disk, so server's admin can use them to feed fail2ban (for example),
  * option disabled by default, because could be used to create trapped-rooms on public servers

server/lib/settings.ts

@@ -83,7 +83,7 @@ Please read
     private: true
   })
 
-  // ********** Moderation and advances customization
+  // ********** Advanced channel customization
   registerSetting({
     type: 'html',
     private: true,
@@ -197,6 +197,14 @@ Please read
     descriptionHTML: loc('no_anonymous_description'),
     private: false
   })
+  registerSetting({
+    name: 'auto-ban-anonymous-ip',
+    label: loc('auto_ban_anonymous_ip_label'),
+    type: 'input-checkbox',
+    default: false,
+    descriptionHTML: loc('auto_ban_anonymous_ip_description'),
+    private: true
+  })
 
   // ********** Theming
   registerSetting({