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Port 5565 (dp-bura)

IANA assigns port 5565 to dp-bura: Data Protector BURA.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
dp-bura TCP Data Protector BURA Micro Focus -

Registry dates for this port: registered 2016-01-13, last modified 2019-10-04.

Check what is listening on port 5565

Linux: is anything listening on TCP 5565?
sudo ss -tlnp 'sport = :5565'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5565
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5565 '
Windows (Command Prompt)
netstat -ano | findstr :5565
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5565 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5565
From Windows
Test-NetConnection HOST -Port 5565

Block port 5565 in the firewall

ufw
sudo ufw deny 5565/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5565 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5565 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5565' -Direction Inbound -Protocol TCP -LocalPort 5565 -Action Block

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