Port 2186Guy-Tek Automated Update Applications

Port 2186 is assigned to Guy-Tek Automated Update Applications.

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

also known as gtaua

Technical Details

what runs on :2186

Guy-Tek Automated Update Applications is registered on port :2186 over tcp and udp to Daniel Story, assigned January 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 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 :2186

this machine

# linux
sudo ss -tulpn 'sport = :2186'

# macos / bsd
sudo lsof -nP -i :2186

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :2186

another host

nmap -sV -p T:2186 <host>
sudo nmap -sU -sV -p U:2186 <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 :2186

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 :2186 yet

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

Record

iana registry entry

port: :2186
service: Guy-Tek Automated Update Applications
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: IANA assigns TCP and UDP port 2186 to Guy-Tek Automated Update Applications. The assignment is registered to Daniel Story; the service is not observed open in internet-wide Nmap scan data.
lookups: 0rank 993
added: 2026-09-21
updated: 2026-09-21
references: IANA service name registry — port 2186

Something wrong?

This record is maintained by the engineers who use port 2186. 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 2026-09-21.

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

browse categories →

ports registered around :2186, by lookups.

port	service	proto	category	risk	views
:2222	DirectAdmin & ESET Remote Admin	TCP	Web Services	caution	21.6k
:2210	MikroTik Dude Remote Management	TCP	Remote Access	caution	13.6k
:2211	MikroTik Dude Secure Management	TCP	Security	caution	12.9k
:2210	NOAAPORT Broadcast	TCPUDP	Network Services	caution	11.4k
:2181	EForward Document Transport	TCPUDP	File Transfer	caution	10.4k
:2161	APC Agent	TCP	Network Services	caution	10.0k
:2223	Office OS X Anti-Piracy Monitor	UDP	Security	caution	9.3k
:2212	LeeCO POS Server	TCPUDP	Network Services	caution	9.3k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :2186Guy-Tek Automated Update Applications

Technical Details

Security Information

Related Ports

Port 2186Guy-Tek Automated Update Applications