Port 24666SmarDTV CAM-to-Second-Screen Service

TCP port 24666 is assigned to SmarDTV for communication between a CAM and a second-screen application.

transport: tcp
in transit: cleartext
assignment: official
risk: 1/10
lookups: 0

also known as sdtvwcam

Technical Details

what runs on :24666

SmarDTV CAM-to-Second-Screen Service is registered on port :24666 over tcp to SmarDTV, assigned March 2015. We don't have a technical write-up for it beyond the IANA registry entry.

In nmap's internet-wide scan data this port is never observed open, so if it's open on your network it's more likely a custom or misconfigured service than the registered one.

find what's listening on :24666

this machine

# linux
sudo ss -tlpn 'sport = :24666'

# macos / bsd
sudo lsof -nP -i :24666

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :24666

another host

nmap -sV -p T:24666 <host>

run it? the handshake, the implementations you meet in the wild and the flags that matter come from the engineers who do.

add technical details

Security Information

exposure of :24666

risk score

1/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

media averages 2.2 across 150 ports — this one sits 1.2 below.

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

no security notes recorded for :24666 yet

known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.

Record

iana registry entry

port: :24666
service: SmarDTV CAM-to-Second-Screen Service
transport: TCP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: Media
usage: The IANA assignment describes a SmarDTV service for communication between a CAM and a second-screen application. It is not reported open in Nmap's internet-wide scan data.
lookups: 0rank 993
added: 2026-10-19
updated: 2026-10-19
references: IANA service name registry — port 24666

Something wrong?

This record is maintained by the engineers who use port 24666. 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 2026-10-19.

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 150 in media →

the 8 most looked-up other ports in media — 150 ports carry that label.

port	service	proto	category	risk	views
:8888	GNUmp3d Streaming HTTP	TCP	Web Services	caution	76.3k
:8000	Alternate HTTP / SHOUTcast	TCP	Web Services	caution	45.0k
:8880	CDDB Protocol Alternate	UDP	Network Services	caution	29.5k
:6005	Camfrog Chat	TCP	Voice and Chat	caution	25.2k
:8880	Windows Media SOAP Connector	TCP	Streaming	caution	24.3k
:8081	HTTP Alternate Port	TCP	Web Services	caution	23.3k
:5001	Slingbox	TCP	Streaming	caution	22.4k
:19302	Google Talk Voice & Video	UDP	Network Services	caution	19.3k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :24666SmarDTV CAM-to-Second-Screen Service

Technical Details

Security Information

Related Ports

Port 24666SmarDTV CAM-to-Second-Screen Service