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Port 47001 (winrm)

IANA assigns port 47001 to winrm: Windows Remote Management Service.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
winrm TCP Windows Remote Management Service Ryan Mack -

Registry dates for this port: registered 2009-04-29.

Check what is listening on port 47001

Linux: is anything listening on TCP 47001?
sudo ss -tlnp 'sport = :47001'
Linux / macOS: which process owns the port
sudo lsof -nP -i :47001
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':47001 '
Windows (Command Prompt)
netstat -ano | findstr :47001
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 47001 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 47001
From Windows
Test-NetConnection HOST -Port 47001

Block port 47001 in the firewall

ufw
sudo ufw deny 47001/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 47001 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 47001 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 47001' -Direction Inbound -Protocol TCP -LocalPort 47001 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.