Port 6543MythTV Backend

TCP 6543 is commonly the MythTV backend control and media service, used by MythTV frontends to connect to a DVR backend.

inStreaming Media

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 7/10
lookups: 0

also known as lds-distrib, mythbackend

1 other service is registered on port 6543. compare all 2 →

Technical Details

what runs on :6543

MythTV uses TCP 6543 by default for its backend protocol. A frontend connects to the backend and negotiates a protocol version before exchanging commands and responses for backend functions such as playback and recording access; the backend's web interface is typically on TCP 6544. This is not the IANA-registered lds-distrib service, and the port can also be used by other software or left unused.

Security Information

exposure of :6543

risk score

7/ 10risk

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

streaming averages 3.1 across 49 ports — this one sits 3.9 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 · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

A reachable MythTV backend can expose recordings and backend functions to network clients; do not expose it directly to the public internet. Restrict access to trusted networks or VPNs and keep MythTV updated. The standard backend protocol should not be assumed to encrypt traffic.

Record

iana registry entry

port: :6543
service: MythTV Backend
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 7/10risk
category: Streaming Media
usage: MythTV backends commonly listen on TCP 6543 for connections from MythTV frontends. IANA assigns the same port to `lds-distrib`, registered to Jack Baker; that assignment is distinct from this widely recognized software use.
lookups: 0rank 993
added: 2026-10-10
updated: 2026-10-10
references: IANA service name registry — port 6543

Something wrong?

This record is maintained by the engineers who use port 6543. 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 2026-10-10.

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 49 in streaming →

the 8 most looked-up other ports in streaming — 49 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	Windows Media SOAP Connector	TCP	Streaming	caution	24.3k
:5001	Slingbox	TCP	Streaming	caution	22.4k
:1220	QTSS Admin	TCP	Streaming	safe	20.6k
:19294	Google Talk Voice/Video	TCP	Streaming	caution	16.6k
:12013	Audition Korea Server	TCPUDP	Streaming	caution	14.5k
:9000	SqueezeCenter	TCP	Web Services	caution	14.4k

risk mix of the 8 listed

safe13%
caution88%

0 of 8 encrypted

Port :6543MythTV Backend

Technical Details

Security Information

Related Ports

Port 6543MythTV Backend