Port 4042LDXP

LDXP is an obscure service assigned to TCP and UDP port 4042.

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

Technical Details

what runs on :4042

no technical write-up for :4042 yet

the handshake, the implementations you meet in the wild, the flags that matter. we have the registry entry — the detail comes from the engineers who run it.

add technical details

Security Information

exposure of :4042

risk score

1/ 10safe

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

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

no security notes recorded for :4042 yet

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

Record

iana registry entry

port: :4042
service: LDXP
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: Port 4042 is assigned by IANA to the LDXP service. The assignment is registered to Craig Calef, but publicly established deployment or usage details are not recorded here.
lookups: 0rank 994
added: 2026-09-05
updated: 2026-09-05
references: IANA service name registry — port 4042

Something wrong?

This record is maintained by the engineers who use port 4042. 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 2026-09-05.

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

browse categories →

ports registered around :4042, by lookups.

port	service	proto	category	risk	views
:4096	Ascom Timeplex BRE	TCPUDP	Network Services	safe	16.5k
:3978	OpenTTD Master Server	TCPUDP	Gaming	caution	12.5k
:4100	WatchGuard Auth Applet		Security	caution	10.1k
:3999	Norman Scanning Service	TCPUDP	Security	caution	9.9k
:4069	Minger Email Verification	UDP	Email	caution	8.5k
:4007	PrintBuzzer Socket Server	TCP	Network Services	caution	8.2k
:4093	PxPlus Client Server	TCPUDP	Databases	caution	8.0k
:4001	Microsoft Ants	TCP	Gaming	caution	7.7k

risk mix of the 8 listed

safe13%
caution88%

0 of 8 encrypted

Port :4042LDXP

Technical Details

Security Information

Related Ports

Port 4042LDXP