Hi-

my postgres listens on 127.0.0.1:5432 but mpd is like this in netstat:

tcp6 :::6600 :::* LISTEN -

lsof -i TCP:6600
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
cantata 16346 myusername 19u IPv4 1053330 0t0 TCP localhost:44386->localhost:6600 (ESTABLISHED)

The lsof command shows what I want it to do correctly.

I read that the OS will drop packets on a port if nothing is listening in netstat.

How come that port 6600 is showing open in TCP6?
Not shown: 65535 closed ports
PORT STATE SERVICE VERSION
6600/tcp open mpd Music Player Daemon 0.20.0

Is anyone out there using mpd, and were you able to get that port closed in nmap? I did an nmap scan on my private IP address.

Edit: systemctl stop mpd
Warning: Stopping mpd.service, but it can still be activated by:
mpd.socket

I figured something else out. It is auto restarting.

I tried systemctl stop mpd.
Then I tried systemctl disable mpd.

Jun 24 16:40:33 mylaptop systemd[1]: Started Music Player Daemon.
Jun 24 16:40:33 mylaptop libsmbclient[21618]: client: [0] opened from myip

It just restarts after a minute or two. When I do :
systemctl status mpd it lists it as active after i stopped and disabled it.

Short of uninstalling it, I don't know how to keep it from reactivating itself and showing up in the list of open ports on nmap -p 6600 myip scan.

Have a cool day.

thanks,
roboloki

Hi all-

I had to disable like this:

# systemctl stop mpd

# systemctl disable mpd

# systemctl mask mpd

# systemctl stop mpd.socket

# systemctl disable mpd.socket

I re-enabled the socket after disabling everything.

(edit) Also, I commented out the bind_to_address that is found in
the mpd.conf file.

The socket is now listening for a connection. The port won't show up as open anymore.

Now all my ports are closed in nmap.
Host is up (0.000056s latency).
All 65536 scanned ports on computer name and my ip address are closed when I stop playing music.

Some other port opens up when the music is on, but when I shut pulseaudio and rhythmbox and rescan with nmap it closes.

That is kind of what I wanted. I didn't know why that port is open even if I didn't listen to music .

PS I also learned today that :: is all 0's which is like 0.0.0.0.
It is still cool to close the open port that is listed when running nmap

thanks.