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Port 11165 (suncacao-websvc)

IANA assigns port 11165 to suncacao-websvc: sun cacao web service access point.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
suncacao-websvc TCP sun cacao web service access point Nick Stephen -
suncacao-websvc UDP sun cacao web service access point Nick Stephen -

Registry dates for this port: registered 2005-08.

Check what is listening on port 11165

Linux: is anything listening on TCP 11165?
sudo ss -tlnp 'sport = :11165'
Linux: UDP 11165
sudo ss -ulnp 'sport = :11165'
Linux / macOS: which process owns the port
sudo lsof -nP -i :11165
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':11165 '
Windows (Command Prompt)
netstat -ano | findstr :11165
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 11165 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 11165
From Windows
Test-NetConnection HOST -Port 11165
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 11165

Block port 11165 in the firewall

ufw
sudo ufw deny 11165/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 11165 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 11165 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 11165' -Direction Inbound -Protocol TCP -LocalPort 11165 -Action Block
ufw
sudo ufw deny 11165/udp
iptables
sudo iptables -A INPUT -p udp --dport 11165 -j DROP
nftables
sudo nft add rule inet filter input udp dport 11165 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 11165' -Direction Inbound -Protocol UDP -LocalPort 11165 -Action Block

Related ports

11163suncacao-rmi11164suncacao-csa11171snss11172oemcacao-jmxmp

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