diff --git a/rtc_config_example-coturn.json b/rtc_config_example-coturn.json
index c64ba92..02ffc1a 100644
--- a/rtc_config_example-coturn.json
+++ b/rtc_config_example-coturn.json
@@ -2,10 +2,10 @@
   "sdpSemantics": "unified-plan",
   "iceServers": [
     {
-        "urls": "stuns:<TURN-DOMAIN>:443"
+        "urls": "stuns:<DOMAIN>:5349"
     },
     {
-        "urls": "turns:<TURN-DOMAIN>:443",
+        "urls": "turns:<DOMAIN>:5349",
         "username": "user",
         "credential": "password"
     }
diff --git a/turnserver_example.conf b/turnserver_example.conf
index fea03e8..8e63eb4 100644
--- a/turnserver_example.conf
+++ b/turnserver_example.conf
@@ -7,17 +7,18 @@ server-name=pairdrop
 listening-ip=0.0.0.0
 
 # External IP-Address of the TURN server
-external-ip=<IP_ADDRESS>
+# only needed, if coturn is behind a NAT
+#external-ip=<IP_ADDRESS>
 
 # relay-ip is needed for tls turns connections
-relay-ip=<IP_ADDRESS>
+# it can be set multiple times. A local IP is sufficient (not 127.0.0.1!!)
+relay-ip=<SOME_LOCAL_IP_ADDRESS>
 
 # Main listening port
 listening-port=3478
 
 # 443 for TURN over TLS, which can bypass firewalls
-# the standard-port is 5349
-tls-listening-port=443
+tls-listening-port=5349
 
 # Further ports that are open for communication
 min-port=10000