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// Other services

Port 13819: DSMCC Session Messages

Port 13819 is assigned by IANA to dsmcc-session (DSMCC Session Messages).

13819

How dsmcc-session works

Other services
client:13819dsmcc-sessionresponse client:13819dsmcc-sessionresponse

The client sends a request to port 13819 and the dsmcc-session service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 13819 dangerous?

We have no specific security note for port 13819. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 13819

ServicePortTransportDescriptionReferenceUpdated
dsmcc-session 13819 TCP, UDP DSMCC Session Messages ISO/IEC 13818-6 MPEG-2 DSM-CC -

// source: IANA service name and port number registry

03 Check it

Which program uses port 13819, and is it reachable?

Linux

sudo ss -ltnup 'sport = :13819'      # process listening on 13819
sudo lsof -nP -i :13819

macOS

sudo lsof -nP -i :13819

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 13819 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 13819
netstat -ano | findstr :13819

From another machine

nmap -p 13819 -sV <host>
sudo nmap -sU -p 13819 <host>
nc -zv <host> 13819

Block it in the firewall

sudo ufw deny 13819/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 13819" -Direction Inbound -LocalPort 13819 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 13819 used for?

Port 13819 is assigned by IANA to dsmcc-session (DSMCC Session Messages).

Is port 13819 TCP or UDP?

Port 13819 is registered for TCP and UDP.

Is it safe to open port 13819?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 13819 is open?

On Linux run "ss -ltnup 'sport = :13819'", on macOS "lsof -nP -i :13819", and on Windows "netstat -ano | findstr :13819" to see the local process. From another machine, "nmap -p 13819 <host>" shows whether it is reachable.

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