diff --git a/images/openwisp_freeradius/Dockerfile b/images/openwisp_freeradius/Dockerfile
index 06e61b84..b59f4cae 100644
--- a/images/openwisp_freeradius/Dockerfile
+++ b/images/openwisp_freeradius/Dockerfile
@@ -16,6 +16,7 @@ COPY ./common/init_command.sh \
     ./common/utils.sh ./
 COPY ./openwisp_freeradius/raddb/ /etc/raddb/
 RUN chown -R freerad:root /opt/etc/raddb/ && \
+    chmod -R go-w /opt/etc/raddb/ && \
     chown -R freerad:root /opt/var/log/
 
 ENV TZ=UTC \
diff --git a/images/openwisp_freeradius/raddb/mods-enabled/rest b/images/openwisp_freeradius/raddb/mods-enabled/rest
index 5e48037c..e7f05dd8 100644
--- a/images/openwisp_freeradius/raddb/mods-enabled/rest
+++ b/images/openwisp_freeradius/raddb/mods-enabled/rest
@@ -5,7 +5,7 @@ rest {
         uri = "${..connect_uri}/authorize/"
         method = 'post'
         body = 'json'
-        data = '{"username": "%{User-Name}", "password": "%{User-Password}"}'
+        data = '{"username": "%{User-Name}", "password": "%{User-Password}", "called_station_id": "%{Called-Station-ID}", "calling_station_id": "%{Calling-Station-ID}"}'
         tls = ${..tls}
     }