Port 3120D2000 Web Server

TCP and UDP port 3120 is assigned to the D2000 Web Server service associated with Tomas Rajcan.

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

Technical Details

what runs on :3120

D2000 Web Server is registered on port :3120 over tcp and udp to Tomas Rajcan. 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 :3120

this machine

# linux
sudo ss -tulpn 'sport = :3120'

# macos / bsd
sudo lsof -nP -i :3120

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :3120

another host

nmap -sV -p T:3120 <host>
sudo nmap -sU -sV -p U:3120 <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 :3120

risk score

1/ 10safe

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

web services averages 3.2 across 182 ports — this one sits 2.2 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 · udp

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

security overview

no security notes recorded for :3120 yet

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

Record

iana registry entry

port: :3120
service: D2000 Web Server
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: Web Services
usage: IANA assigns TCP and UDP port 3120 to the D2000 Webserver Port service, registered to Tomas Rajcan. Its deployment and protocol behavior are not established here, and it has not appeared open in the cited nmap scan data.
lookups: 0rank 993
added: 2026-09-27
updated: 2026-09-27
references: IANA service name registry — port 3120

Something wrong?

This record is maintained by the engineers who use port 3120. 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 2026-09-27.

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 182 in web services →

the 8 most looked-up other ports in web services — 182 ports carry that label.

port	service	proto	category	risk	views
:8888	Sun Answerbook & Alt HTTP	TCP	Web Services	caution	123.9k
:8000	Intel Remote Desktop / Alternate HTTP Port	TCP	Web Services	safe	84.3k
:8888	NewsEDGE	TCPUDP	Web Services	caution	83.3k
:8888	HTTP Alternative Port	TCP	Web Services	caution	76.5k
:8888	GNUmp3d Streaming HTTP	TCP	Web Services	caution	76.3k
:9080	Groove RPC	TCPUDP	Web Services	caution	70.8k
:8881	Atlasz Secure Server	TCP	Web Services	caution	67.6k
:80	HTTP	TCPUDP	Web Services	caution	67.3k

risk mix of the 8 listed

safe13%
caution88%

0 of 8 encrypted

Port :3120D2000 Web Server

Technical Details

Security Information

Related Ports

Port 3120D2000 Web Server