Port 41121Pandora FMS Tentacle

Tentacle transfers monitoring data files from Pandora FMS agents to a server over TCP, usually on port 41121.

transport: tcp
in transit: cleartext
assignment: official
risk: 4/10
lookups: 0

also known as Tentacle Server, 41121/tcp

Technical Details

what runs on :41121

Tentacle runs over TCP, conventionally on port 41121. Agents connect to the Tentacle server and transfer data files for Pandora FMS to process; the protocol is designed for this agent-to-server file delivery, not interactive shell access. SSL/TLS support is available, but encryption is not enabled by default in a normal deployment.

Security Information

exposure of :41121

risk score

4/ 10caution

worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.

network services averages 2.6 across 2,006 ports — this one sits 1.4 above.

in transit

cleartext

credentials and payloads are readable by anyone on path

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

An exposed Tentacle listener can accept agent uploads, so it should generally be limited to trusted agent networks rather than exposed publicly. Without SSL/TLS, traffic is not encrypted in transit; enable the available encryption option when data crosses untrusted networks and keep the server and its file-processing components patched.

Record

iana registry entry

port: :41121
service: Pandora FMS Tentacle
transport: TCP
encryption: cleartext
assignment: iana registered
risk: 4/10caution
category: Network Services System
usage: Tentacle is Pandora FMS's file-transfer service, used by agents to send monitoring data files to a Pandora FMS server. Port 41121 is its conventional listening port; it is a product-specific service rather than a general-purpose file-transfer protocol.
lookups: 0rank 993
added: 2026-10-20
updated: 2026-10-20
references: IANA service name registry — port 41121

Something wrong?

This record is maintained by the engineers who use port 41121. 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 2026-10-20.

01edit any field on a page of its own
02a model checks it for accuracy and spam
03clean and confident goes live immediately

edit this record →back to the registry

Related Ports

all 2,006 in network services →

the 8 most looked-up other ports in network services — 2,006 ports carry that label.

port	service	proto	category	risk	views
:9080	Groove RPC	TCPUDP	Web Services	caution	70.8k
:6543	Jetnet	UDP	Network Services	caution	65.3k
:5938	TeamViewer	TCPUDP	Remote Access	caution	65.0k
:8291	Winbox MikroTik Admin	TCP	Security	caution	62.9k
:3233	WhiskerControl Protocol	TCPUDP	Network Services	caution	61.9k
:3268	Microsoft Global Catalog (GC)	TCPUDP	Security	caution	54.6k
:135	Microsoft EPMAP	TCPUDP	Security	caution	51.9k
:3128	Tatsoft Default HTTP Proxy	TCP	Web Services	caution	46.8k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :41121Pandora FMS Tentacle

Technical Details

Security Information

Related Ports

Port 41121Pandora FMS Tentacle