Port 6243JEOL Network Services Dynamic Discovery Protocol 3

UDP service for JEOL Network Services Dynamic Discovery Protocol version 3.

transport
udp

single transport

in transit
cleartext

payload readable on path

assignment
official

registered with iana

risk
1/10

safe

lookups
0

rank 993 of 4,404 · top 23%

also known as jeol-nsddp-3

Technical Details

what runs on :6243

JEOL Network Services Dynamic Discovery Protocol 3 is registered on port :6243 over udp to Kevin Wellwood, assigned April 2008. 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 :6243

this machine
# linux
sudo ss -ulpn 'sport = :6243'

# macos / bsd
sudo lsof -nP -i :6243

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :6243
another host
sudo nmap -sU -sV -p U:6243 <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 :6243

risk score

1/ 10safe

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

network services averages 2.7 across 1,343 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

udp

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

security overview

no security notes recorded for :6243 yet

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

the 8 most looked-up other ports in network services — 1,343 ports carry that label.

risk mix of the 8 listed

  • caution100%

0 of 8 encrypted