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Port 5419 (dj-ice)

IANA assigns port 5419 to dj-ice: DJ-ICE.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
dj-ice TCP DJ-ICE Don Tyson 2 -
dj-ice UDP DJ-ICE Don Tyson 2 -

Check what is listening on port 5419

Linux: is anything listening on TCP 5419?
sudo ss -tlnp 'sport = :5419'
Linux: UDP 5419
sudo ss -ulnp 'sport = :5419'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5419
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5419 '
Windows (Command Prompt)
netstat -ano | findstr :5419
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5419 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5419
From Windows
Test-NetConnection HOST -Port 5419
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5419

Block port 5419 in the firewall

ufw
sudo ufw deny 5419/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5419 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5419 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5419' -Direction Inbound -Protocol TCP -LocalPort 5419 -Action Block
ufw
sudo ufw deny 5419/udp
iptables
sudo iptables -A INPUT -p udp --dport 5419 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5419 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5419' -Direction Inbound -Protocol UDP -LocalPort 5419 -Action Block

Related ports

5417sns-agent5418mcntp5420cylink-c5421netsupport2

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