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Port 5567 (dof-dps-mc-sec)

IANA assigns port 5567 to dof-dps-mc-sec: DOF Protocol Stack Multicast/Secure Transport.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
dof-dps-mc-sec TCP DOF Protocol Stack Multicast/Secure Transport OpenDOF -
dof-dps-mc-sec UDP DOF Protocol Stack Multicast/Secure Transport OpenDOF -

Registry dates for this port: registered 2004-11, last modified 2015-04-23.

Check what is listening on port 5567

Linux: is anything listening on TCP 5567?
sudo ss -tlnp 'sport = :5567'
Linux: UDP 5567
sudo ss -ulnp 'sport = :5567'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5567
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5567 '
Windows (Command Prompt)
netstat -ano | findstr :5567
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5567 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5567
From Windows
Test-NetConnection HOST -Port 5567
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5567

Block port 5567 in the firewall

ufw
sudo ufw deny 5567/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5567 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5567 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5567' -Direction Inbound -Protocol TCP -LocalPort 5567 -Action Block
ufw
sudo ufw deny 5567/udp
iptables
sudo iptables -A INPUT -p udp --dport 5567 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5567 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5567' -Direction Inbound -Protocol UDP -LocalPort 5567 -Action Block

Related ports

5565dp-bura5566westec-connect5568sdt5569rdmnet-ctrl, rdmnet-device

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