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Port 17234 (integrius-stp)

IANA assigns port 17234 to integrius-stp: Integrius Secure Tunnel Protocol.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
integrius-stp TCP Integrius Secure Tunnel Protocol Christian Klemetsson -
integrius-stp UDP Integrius Secure Tunnel Protocol Christian Klemetsson -

Registry dates for this port: registered 2010-03-04.

Check what is listening on port 17234

Linux: is anything listening on TCP 17234?
sudo ss -tlnp 'sport = :17234'
Linux: UDP 17234
sudo ss -ulnp 'sport = :17234'
Linux / macOS: which process owns the port
sudo lsof -nP -i :17234
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':17234 '
Windows (Command Prompt)
netstat -ano | findstr :17234
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 17234 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 17234
From Windows
Test-NetConnection HOST -Port 17234
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 17234

Block port 17234 in the firewall

ufw
sudo ufw deny 17234/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 17234 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 17234 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 17234' -Direction Inbound -Protocol TCP -LocalPort 17234 -Action Block
ufw
sudo ufw deny 17234/udp
iptables
sudo iptables -A INPUT -p udp --dport 17234 -j DROP
nftables
sudo nft add rule inet filter input udp dport 17234 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 17234' -Direction Inbound -Protocol UDP -LocalPort 17234 -Action Block

Related ports

17224trdp-pd17225trdp-md17235ssh-mgmt17500db-lsp, db-lsp-disc

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