Port 2539VSI Admin

A registered administrative service assigned to VSI Admin on TCP and UDP port 2539.

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

Technical Details

what runs on :2539

VSI Admin is registered on port :2539 over tcp and udp to Rob Juergens. 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 found open rarely. What's listening is often not the registered service, so check before you assume.

find what's listening on :2539

this machine

# linux
sudo ss -tulpn 'sport = :2539'

# macos / bsd
sudo lsof -nP -i :2539

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :2539

another host

nmap -sV -p T:2539 <host>
sudo nmap -sU -sV -p U:2539 <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 :2539

risk score

1/ 10safe

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

system averages 2.7 across 904 ports — this one sits 1.7 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 :2539 yet

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

Record

iana registry entry

port: :2539
service: VSI Admin
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: System
usage: IANA assigns TCP and UDP port 2539 to the service name "vsiadmin," described as "VSI Admin." The assignment is registered to Rob Juergens, but the registry provides no product or protocol details.
lookups: 0rank 993
added: 2026-09-03
updated: 2026-09-03
references: IANA service name registry — port 2539

Something wrong?

This record is maintained by the engineers who use port 2539. 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 2026-09-03.

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 904 in system →

the 8 most looked-up other ports in system — 904 ports carry that label.

port	service	proto	category	risk	views
:8888	Sun Answerbook & Alt HTTP	TCP	Web Services	caution	123.9k
:4664	Google Desktop Search	TCP	System	caution	67.2k
:8008	IBM HTTP Server Admin	TCP	Web Services	caution	58.3k
:3268	Microsoft Global Catalog (GC)	TCPUDP	Security	caution	54.6k
:135	Microsoft EPMAP	TCPUDP	Security	caution	51.9k
:9080	WebSphere HTTP Transport (default)	TCP	Web Services	caution	51.6k
:23	Telnet	TCP	Remote Access	caution	34.8k
:12489	NSClient Monitoring Agent	TCP	Network Services	caution	30.0k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :2539VSI Admin

Technical Details

Security Information

Related Ports

Port 2539VSI Admin