Port 2461qadmifoper

qadmifoper is an obscure service assignment with no established, widely encountered listener or documented protocol behavior.

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

Technical Details

what runs on :2461

qadmifoper is registered on port :2461 over tcp and udp. 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 :2461

this machine

# linux
sudo ss -tulpn 'sport = :2461'

# macos / bsd
sudo lsof -nP -i :2461

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :2461

another host

nmap -sV -p T:2461 <host>
sudo nmap -sU -sV -p U:2461 <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 :2461

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 :2461 yet

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

Record

iana registry entry

port: :2461
service: qadmifoper
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: IANA assigns qadmifoper to TCP and UDP port 2461, but records no registrant. It is not known as a commonly encountered service, and it has not appeared open in the cited internet-wide scan data.
lookups: 0rank 993
added: 2026-09-22
updated: 2026-09-22
references: IANA service name registry — port 2461

Something wrong?

This record is maintained by the engineers who use port 2461. 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 2026-09-22.

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 :2461, by lookups.

port	service	proto	category	risk	views
:2484	Oracle SSL Listener	TCPUDPtls	Security	caution	25.0k
:2501	TheosNet-Admin	TCP	Remote Access	caution	21.7k
:2483	Oracle Listener (Unsecure)	TCPUDP	Security	caution	14.1k
:2447	OpenView NNM ovwdb Daemon	TCPUDP	Network Services	caution	12.8k
:2404	IEC 60870-5-104	TCP	Network Services	caution	10.5k
:2500	sMessenger Service	TCP	Network Services	caution	8.9k
:2427	Cisco MGCP	UDP	Network Services	caution	7.9k
:2401	CVS	TCP	File Transfer	caution	4.9k

risk mix of the 8 listed

caution100%

1 of 8 encrypted

Port :2461qadmifoper

Technical Details

Security Information

Related Ports

Port 2461qadmifoper