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Port 1047 (neod1)

IANA assigns port 1047 to neod1: Sun's NEO Object Request Broker.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
neod1 TCP Sun's NEO Object Request Broker - -
neod1 UDP Sun's NEO Object Request Broker - -

Check what is listening on port 1047

Linux: is anything listening on TCP 1047?
sudo ss -tlnp 'sport = :1047'
Linux: UDP 1047
sudo ss -ulnp 'sport = :1047'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1047
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1047 '
Windows (Command Prompt)
netstat -ano | findstr :1047
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1047 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1047
From Windows
Test-NetConnection HOST -Port 1047
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1047

Block port 1047 in the firewall

ufw
sudo ufw deny 1047/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1047 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1047 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1047' -Direction Inbound -Protocol TCP -LocalPort 1047 -Action Block
ufw
sudo ufw deny 1047/udp
iptables
sudo iptables -A INPUT -p udp --dport 1047 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1047 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1047' -Direction Inbound -Protocol UDP -LocalPort 1047 -Action Block

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