diff --git a/templates/iptables-rules.v4.j2 b/templates/iptables-rules.v4.j2
index e9543a5..66064b6 100644
--- a/templates/iptables-rules.v4.j2
+++ b/templates/iptables-rules.v4.j2
@@ -227,8 +227,10 @@
 {% endif %}
 {% if jgroups_sources is defined %}
 {% for s in jgroups_sources %}
--A INPUT -d {{ jgroups_multicast_net | default('224.0.0.1') }} -j ACCEPT
+-A INPUT -s {{ s }} -d {{ jgroups_multicast_net | default('224.0.0.1') }} -j ACCEPT
 {% endfor %}
+{% else %}
+-A INPUT -d {{ jgroups_multicast_net | default('224.0.0.1') }} -j ACCEPT
 {% endif %}
 {% endif %}