Port 3972ICT-Control Protocol

Port 3972 is assigned to the ICT-Control Protocol, registered under the service name iconp.

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 4,705 · top 21%

also known as iconp

Technical Details

what runs on :3972

ICT-Control Protocol is registered on port :3972 over tcp and udp to Roel Harbers, assigned August 2005. 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 :3972

this machine
# linux
sudo ss -tulpn 'sport = :3972'

# macos / bsd
sudo lsof -nP -i :3972

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :3972
another host
nmap -sV -p T:3972 <host>
sudo nmap -sU -sV -p U:3972 <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 :3972

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 :3972 yet

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

ports registered around :3972, by lookups.

portservicerisk
:3978OpenTTD Master Servercaution
:3999Norman Scanning Servicecaution
:4007PrintBuzzer Socket Servercaution
:4001Microsoft Antscaution
:3945EMCADScaution
:4018Protocol Info & Warningscaution
:3979OpenTTDcaution
:4000Diablo IIcaution

risk mix of the 8 listed

  • caution100%

0 of 8 encrypted