diff --git a/mod/freeswitch/acl.conf.xml b/mod/freeswitch/acl.conf.xml
index 4f1e6a6..4997776 100644
--- a/mod/freeswitch/acl.conf.xml
+++ b/mod/freeswitch/acl.conf.xml
@@ -24,6 +24,7 @@
       <node type="allow" cidr="127.0.0.1/32"/>
       <node type="allow" cidr="10.0.0.0/8"/>
       <node type="allow" cidr="192.168.0.0/16"/>
+      <node type="allow" cidr="$${external_ip_v4}/32"/>
     </list>
 
     <list name="deny_private_v6" default="allow">
diff --git a/mod/freeswitch/vars.xml b/mod/freeswitch/vars.xml
index 6e53fa9..04ef431 100644
--- a/mod/freeswitch/vars.xml
+++ b/mod/freeswitch/vars.xml
@@ -60,6 +60,7 @@
   -->
   <X-PRE-PROCESS cmd="set" data="local_ip_v4=10.7.7.1"/>
   <X-PRE-PROCESS cmd="set" data="local_ip_v6=::1"/>
+  <X-PRE-PROCESS cmd="set" data="external_ip_v4={{ .Env.EXTERNAL_IP }}"/>
   <X-PRE-PROCESS cmd="set" data="domain={{ .Env.DOMAIN }}"/>
   <X-PRE-PROCESS cmd="set" data="domain_name=$${domain}"/>
   <X-PRE-PROCESS cmd="set" data="hold_music=local_stream://moh"/>