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Port 17223 (isa100-gci)

IANA assigns port 17223 to isa100-gci: ISA100 GCI is a service utilizing a common interface between an ISA100 Wireless gateway and a client application.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
isa100-gci TCP ISA100 GCI is a service utilizing a common interface between an ISA100 Wireless gateway and a client application ISA100 Wireless Compliance Institute -

Registry dates for this port: registered 2015-07-24.

Check what is listening on port 17223

Linux: is anything listening on TCP 17223?
sudo ss -tlnp 'sport = :17223'
Linux / macOS: which process owns the port
sudo lsof -nP -i :17223
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':17223 '
Windows (Command Prompt)
netstat -ano | findstr :17223
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 17223 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 17223
From Windows
Test-NetConnection HOST -Port 17223

Block port 17223 in the firewall

ufw
sudo ufw deny 17223/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 17223 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 17223 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 17223' -Direction Inbound -Protocol TCP -LocalPort 17223 -Action Block

Related ports

17221avdecc17222cpsp17224trdp-pd17225trdp-md

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.