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Port 9163 (apani4)

IANA assigns port 9163 to apani4.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
apani4 TCP apani4 Neal Taylor -
apani4 UDP apani4 Neal Taylor -

Check what is listening on port 9163

Linux: is anything listening on TCP 9163?
sudo ss -tlnp 'sport = :9163'
Linux: UDP 9163
sudo ss -ulnp 'sport = :9163'
Linux / macOS: which process owns the port
sudo lsof -nP -i :9163
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':9163 '
Windows (Command Prompt)
netstat -ano | findstr :9163
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 9163 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 9163
From Windows
Test-NetConnection HOST -Port 9163
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 9163

Block port 9163 in the firewall

ufw
sudo ufw deny 9163/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 9163 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 9163 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 9163' -Direction Inbound -Protocol TCP -LocalPort 9163 -Action Block
ufw
sudo ufw deny 9163/udp
iptables
sudo iptables -A INPUT -p udp --dport 9163 -j DROP
nftables
sudo nft add rule inet filter input udp dport 9163 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 9163' -Direction Inbound -Protocol UDP -LocalPort 9163 -Action Block

Related ports

9161apani29162apani39164apani59183sirius-agent

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