Port 10933Octopus Deploy Tentacle

Octopus Deploy Tentacle listens here for secure deployment and management connections from an Octopus Server.

transport: tcp
in transit: encrypted
assignment: official
risk: 7/10
lookups: 0

also known as octopustentacle

Technical Details

what runs on :10933

The Tentacle agent listens on TCP 10933 by default in listening mode. It uses Octopus Deploy's agent communication protocol over an encrypted, mutually authenticated TLS connection rather than a general-purpose HTTP service. The Octopus Server must be configured to trust the Tentacle's certificate, and the Tentacle must trust the server. Polling-mode Tentacles initiate outbound connections to the Octopus Server's polling endpoint instead of accepting connections on this port.

Security Information

exposure of :10933

risk score

7/ 10risk

treat as sensitive. widely scanned and regularly exploited when reachable — restrict it to known sources.

remote access averages 3.9 across 230 ports — this one sits 3.1 above.

in transit

encrypted

payloads are protected on the wire

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp

every listening transport is another surface to filter at the edge

security overview

A trusted Octopus Server can use the Tentacle to orchestrate deployments and execute deployment tasks on the target host, so access to this port is operationally sensitive. TLS and certificate-based trust help restrict connections, but the listener should normally be reachable only from the relevant Octopus Server or tightly controlled management network—not exposed broadly to the internet. Keep the agent updated and protect its certificate and deployment credentials.

Record

iana registry entry

port: :10933
service: Octopus Deploy Tentacle
transport: TCP
encryption: tls / encrypted
assignment: iana registered
risk: 7/10risk
category: Remote Access System
usage: This is the default TCP listening port for an Octopus Deploy Tentacle in listening mode. Octopus Server connects to the agent to manage deployments and run deployment tasks; in polling mode, the Tentacle instead initiates connections to the server.
lookups: 0rank 993
added: 2026-10-16
updated: 2026-10-16
references: IANA service name registry — port 10933

Something wrong?

This record is maintained by the engineers who use port 10933. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-16.

01edit any field on a page of its own
02a model checks it for accuracy and spam
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edit this record →back to the registry

Related Ports

all 230 in remote access →

the 8 most looked-up other ports in remote access — 230 ports carry that label.

port	service	proto	category	risk	views
:8000	Intel Remote Desktop / Alternate HTTP Port	TCP	Web Services	safe	84.3k
:8888	D2GS Admin Console	TCP	Remote Access	caution	83.7k
:8881	Atlasz Secure Server	TCP	Web Services	caution	67.6k
:5938	TeamViewer	TCPUDP	Remote Access	caution	65.0k
:8291	Winbox MikroTik Admin	TCP	Security	caution	62.9k
:8008	IBM HTTP Server Admin	TCP	Web Services	caution	58.3k
:135	Microsoft EPMAP	TCPUDP	Security	caution	51.9k
:23	Telnet	TCP	Remote Access	caution	34.8k

risk mix of the 8 listed

safe13%
caution88%

0 of 8 encrypted

Port :10933Octopus Deploy Tentacle

Technical Details

Security Information

Related Ports

Port 10933Octopus Deploy Tentacle