Port 5197 (tunstall-lwp)

IANA assigns port 5197 to tunstall-lwp: Tunstall Lone worker device interface.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

tunstall-lwp TCP Tunstall Lone worker device interface Tunstall Healthcare UK Ltd -

Registry dates for this port: registered 2014-12-10.

Linux: is anything listening on TCP 5197?

sudo ss -tlnp 'sport = :5197'

Linux / macOS: which process owns the port

sudo lsof -nP -i :5197

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':5197 '

Windows (Command Prompt)

netstat -ano | findstr :5197

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5197 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 5197

From Windows

Test-NetConnection HOST -Port 5197

ufw

sudo ufw deny 5197/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 5197 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 5197 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 5197' -Direction Inbound -Protocol TCP -LocalPort 5197 -Action Block

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