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Port 1145 (x9-icue)

IANA assigns port 1145 to x9-icue: X9 iCue Show Control.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
x9-icue TCP X9 iCue Show Control Brandon Potter -
x9-icue UDP X9 iCue Show Control Brandon Potter -

Registry dates for this port: registered 2006-01.

Check what is listening on port 1145

Linux: is anything listening on TCP 1145?
sudo ss -tlnp 'sport = :1145'
Linux: UDP 1145
sudo ss -ulnp 'sport = :1145'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1145
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1145 '
Windows (Command Prompt)
netstat -ano | findstr :1145
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1145 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1145
From Windows
Test-NetConnection HOST -Port 1145
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1145

Block port 1145 in the firewall

ufw
sudo ufw deny 1145/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1145 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1145 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1145' -Direction Inbound -Protocol TCP -LocalPort 1145 -Action Block
ufw
sudo ufw deny 1145/udp
iptables
sudo iptables -A INPUT -p udp --dport 1145 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1145 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1145' -Direction Inbound -Protocol UDP -LocalPort 1145 -Action Block

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