Update Frequently Asked Questions

tutorials/Frequently-Asked-Questions.md

@@ -39,6 +39,7 @@
 - [How to back up and reimport conversations and accounts](#advanced-7)
 - [How secure are you?](#advanced-8)
 - [When do public IPs get exposed?](#advanced-9)
+- [What port Jami uses?](#advanced-10)
 
 This page aims to gather as many resources as possible (technical or not) and
 condense them to create concise documentation. Then, this can then be
@@ -353,8 +354,22 @@ This will not work (actually, you can create the SIP control connection because
 
 ### <a name="advanced-10">What port Jami uses?</a>
 
-+ dhtproxy, nameserver: TCP [80-100], 443
+Jami works as a server and get new ports for each connections (randomly binded). This is the ranges that can be usedd for each components:
+
++ dht: UDP [4000, 8888]
 + audio: UDP [16384-32766]
 + video: UDP [49152-65534]
++ SIP Control: UDP/TCP randomly binded
+
+So for ufw, we recommend to run:
+`sudo ufw default allow outgoing`
+
+For now, you can't specify a specific range to configure ports used by Jami. The inbound traffic can be controlled without issue, Jami should work and can use a TURN server if needed.
+
+If you run your own proxy or nameserver:
+
++ dhtproxy, nameserver: TCP [80-100], 443
+
+If you run your own TURN server:
+
 + TURN/STUN: TCP+UDP 3478, 5349
-+ dht: UDP [4000, 8888]