Port 5203TARGUS GetData 3

TCP/UDP port 5203 is assigned to TARGUS GetData 3, a little-documented service not observed open in Nmap scan data.

transport
tcp · udp

2 transports registered

in transit
cleartext

payload readable on path

assignment
official

registered with iana

risk
1/10

safe

lookups
0

rank 993 of 5,405 · top 18%

Technical Details

what runs on :5203

TARGUS GetData 3 is registered on port :5203 over tcp and udp to John Keaveney. 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 :5203

this machine
# linux
sudo ss -tulpn 'sport = :5203'

# macos / bsd
sudo lsof -nP -i :5203

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :5203
another host
nmap -sV -p T:5203 <host>
sudo nmap -sU -sV -p U:5203 <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 :5203

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 :5203 yet

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

ports registered around :5203, by lookups.

risk mix of the 8 listed

  • caution100%

1 of 8 encrypted