Port 10933 (octopustentacle)

IANA assigns port 10933 to octopustentacle: Listen port used by the Octopus Deploy Tentacle deployment agent.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

octopustentacle TCP Listen port used by the Octopus Deploy Tentacle deployment agent Octopus Deploy Pty Ltd -

Registry dates for this port: registered 2015-01-28.

Linux: is anything listening on TCP 10933?

sudo ss -tlnp 'sport = :10933'

Linux / macOS: which process owns the port

sudo lsof -nP -i :10933

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':10933 '

Windows (Command Prompt)

netstat -ano | findstr :10933

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 10933 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 10933

From Windows

Test-NetConnection HOST -Port 10933

ufw

sudo ufw deny 10933/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 10933 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 10933 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 10933' -Direction Inbound -Protocol TCP -LocalPort 10933 -Action Block

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