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Port 13819 (dsmcc-session)

IANA assigns port 13819 to dsmcc-session: DSMCC Session Messages.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
dsmcc-session TCP DSMCC Session Messages Tim Addington ISO/IEC 13818-6 MPEG-2 DSM-CC
dsmcc-session UDP DSMCC Session Messages Tim Addington ISO/IEC 13818-6 MPEG-2 DSM-CC

Check what is listening on port 13819

Linux: is anything listening on TCP 13819?
sudo ss -tlnp 'sport = :13819'
Linux: UDP 13819
sudo ss -ulnp 'sport = :13819'
Linux / macOS: which process owns the port
sudo lsof -nP -i :13819
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':13819 '
Windows (Command Prompt)
netstat -ano | findstr :13819
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 13819 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 13819
From Windows
Test-NetConnection HOST -Port 13819
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 13819

Block port 13819 in the firewall

ufw
sudo ufw deny 13819/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 13819 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 13819 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 13819' -Direction Inbound -Protocol TCP -LocalPort 13819 -Action Block
ufw
sudo ufw deny 13819/udp
iptables
sudo iptables -A INPUT -p udp --dport 13819 -j DROP
nftables
sudo nft add rule inet filter input udp dport 13819 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 13819' -Direction Inbound -Protocol UDP -LocalPort 13819 -Action Block

Related ports

13786nomdb13818dsmcc-config13820dsmcc-passthru13821dsmcc-download

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.