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Port 9994 (palace-3)

IANA assigns port 9994 to palace-3: OnLive-3.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
palace-3 TCP OnLive-3 Douglas Crockford -
palace-3 UDP OnLive-3 Douglas Crockford -

Check what is listening on port 9994

Linux: is anything listening on TCP 9994?
sudo ss -tlnp 'sport = :9994'
Linux: UDP 9994
sudo ss -ulnp 'sport = :9994'
Linux / macOS: which process owns the port
sudo lsof -nP -i :9994
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':9994 '
Windows (Command Prompt)
netstat -ano | findstr :9994
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 9994 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 9994
From Windows
Test-NetConnection HOST -Port 9994
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 9994

Block port 9994 in the firewall

ufw
sudo ufw deny 9994/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 9994 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 9994 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 9994' -Direction Inbound -Protocol TCP -LocalPort 9994 -Action Block
ufw
sudo ufw deny 9994/udp
iptables
sudo iptables -A INPUT -p udp --dport 9994 -j DROP
nftables
sudo nft add rule inet filter input udp dport 9994 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 9994' -Direction Inbound -Protocol UDP -LocalPort 9994 -Action Block

Related ports

9992palace-19993palace-29995palace-49996palace-5

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