diff --git a/tasks/firewall.yml b/tasks/firewall.yml
index 5b24158..b330cac 100644
--- a/tasks/firewall.yml
+++ b/tasks/firewall.yml
@@ -18,6 +18,8 @@
     - "{{ sshd_port }}"
     - http
     - https
+    # Matrix federation port
+    - 8448
 
 - name: Allow DNS port to LAN
   community.general.ufw: