I'm having firewall problems with CastBridge on a Ubuntu server v 18.04.
I'm running ufw and I've defined a LMS "app" profile for ufw:


Code:
--------------------
    [lms]
  title=Logitech Media Server
  description=All ports for LMS and CastBridge
  ports=3483,9000,9090,49152:49183/tcp|3483/udp
  
--------------------


These settings usually work for me, but in this particular household,
there are way more devices on the network than I usually encounter,
including 5 chromecast devices that squeeze2cast registers as players.

With the firewall running, the google speakers give their customary
"chrip" when squeeze2cast connects, but the music never plays.  With the
firewall off, music plays.

I've tried expanding the port range in the app profile for CastBridge to
40000:60000 and that works, but I haven't been able to narrow down the
needed range.  The CastBrige documentation, unless I've missed newer
info, just speaks of needing a port within a range of 32 beginning at
49152.  Is this info outdated?

This is what squeeze2cast is currently using on this system


Code:
--------------------
    
  # lsof -i -n -P +c 0 | grep squeeze2cast
  
  squeeze2cast-x8 1516             lms    5u  IPv4  30368      0t0  UDP *:5353
  squeeze2cast-x8 1516             lms    7u  IPv4  30370      0t0  TCP 
10.0.0.222:37294->10.0.0.222:3483 (ESTABLISHED)
  squeeze2cast-x8 1516             lms   10u  IPv4  30372      0t0  TCP 
10.0.0.222:37296->10.0.0.222:3483 (ESTABLISHED)
  squeeze2cast-x8 1516             lms   11u  IPv4  30373      0t0  TCP 
10.0.0.222:58770->10.0.0.91:8009 (ESTABLISHED)
  squeeze2cast-x8 1516             lms   13u  IPv4  31095      0t0  TCP 
10.0.0.222:37300->10.0.0.222:3483 (ESTABLISHED)
  squeeze2cast-x8 1516             lms   16u  IPv4  30375      0t0  TCP 
10.0.0.222:37302->10.0.0.222:3483 (ESTABLISHED)
  squeeze2cast-x8 1516             lms   18u  IPv4  31101      0t0  TCP 
10.0.0.222:37306->10.0.0.222:3483 (ESTABLISHED)
  squeeze2cast-x8 1516             lms   19u  IPv4  30378      0t0  TCP 
10.0.0.222:59572->10.0.0.167:8009 (ESTABLISHED)
  squeeze2cast-x8 1516             lms   20u  IPv4  46574      0t0  TCP 
10.0.0.222:34762->10.0.0.44:8009 (ESTABLISHED)
  squeeze2cast-x8 1516             lms   21u  IPv4  46696      0t0  TCP 
10.0.0.222:48829->10.0.0.44:58846 (ESTABLISHED)
  squeeze2cast-x8 1516             lms   23u  IPv4  46694      0t0  TCP *:48829 
(LISTEN)
  squeeze2cast-x8 1516             lms   24u  IPv4  46565      0t0  TCP *:44443 
(LISTEN)
  squeeze2cast-x8 1516             lms   25u  IPv4  46566      0t0  TCP 
10.0.0.222:40624->10.0.0.222:9000 (ESTABLISHED)
  squeeze2cast-x8 1516             lms   26u  IPv4  47600      0t0  TCP 
10.0.0.222:44443->10.0.0.91:58060 (ESTABLISHED)
  squeeze2cast-x8 1516             lms   28u  IPv4  46695      0t0  TCP 
10.0.0.222:40662->10.0.0.222:9000 (ESTABLISHED)
  
--------------------


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