I can connect to my mumble server through my local (Wireless LAN IPv4) ip: 192.168.0.15, but I cannot connect using the ip taken from this website: http://www.whatismyip.com/.
I have forwarded 192.168.0.15 at port 64738 on my modem, both TCP and UDP. And I still cannot connect. I have not changed any settings in mumble or murmur, they are all at their defaults, but I have registered myself as a user while connected via local ip.
This is the error I get with mumble, before I join using my local ip (I've censored my external ip with x's):
[10:54:23 AM] Welcome to Mumble.
[10:54:33 AM] Connecting to server 99.236.xxx.xx.
[10:55:03 AM] Server connection failed: Connection timed out.
[10:56:52 AM] Connecting to server 192.168.0.15.
[10:56:53 AM] Connected.
And here is the murmur log:
<W>2014-11-26 10:53:26.369 Initializing settings from C:/Program Files (x86)/Mumble/murmur.ini (basepath C:/Program Files (x86)/Mumble)
<W>2014-11-26 10:53:26.375 OpenSSL: OpenSSL 1.0.0n 6 Aug 2014
<W>2014-11-26 10:53:26.384 SSL: CA certificate filter applied. Filtered size: 84, original size: 84
<W>2014-11-26 10:53:26.386 ServerDB: Opened SQLite database C:/Users/Lucas/murmur.sqlite
<W>2014-11-26 10:53:26.391 Murmur 1.2.8 (1.2.8) running on Win: 6.2.9200.1: Booting servers
<W>2014-11-26 10:53:26.537 1 => Server listening on [::]:64738
<W>2014-11-26 10:53:26.752 1 => Server listening on 0.0.0.0:64738
<W>2014-11-26 10:53:26.758 Bonjour: Failed to load dnssd.dll
<W>2014-11-26 10:53:26.876 1 => Not registering server as public
<W>2014-11-26 10:56:53.126 1 => <1:(-1)> New connection: 192.168.0.15:59710
<W>2014-11-26 10:56:53.126 Connection: Failed to add flow to QOS
<W>2014-11-26 10:56:53.471 1 => <1:(-1)> Client version 1.2.8 (Win: 1.2.8)
<W>2014-11-26 10:56:53.747 1 => Starting voice thread
<W>2014-11-26 10:56:53.882 1 => CELT codec switch ffffffff80000010 0 (prefer ffffffff80000010) (Opus 1)
<W>2014-11-26 10:56:54.083 1 => <1:asdfghjkl(1)> Authenticated
I am using windows 8.1 and have avast! antivirus.
edit: I have used canyouseeme.org to determine that port 64738 is in fact open.