CyberHunter
Local dataset, no network
// Other services

Port 2674: ewnn

Port 2674 is assigned by IANA to ewnn (ewnn).

2674

How ewnn works

Other services
client:2674ewnnresponse client:2674ewnnresponse

The client sends a request to port 2674 and the ewnn service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 2674 dangerous?

We have no specific security note for port 2674. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 2674

ServicePortTransportDescriptionReferenceUpdated
ewnn 2674 TCP, UDP ewnn - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2674, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2674'      # process listening on 2674
sudo lsof -nP -i :2674

macOS

sudo lsof -nP -i :2674

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2674 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2674
netstat -ano | findstr :2674

From another machine

nmap -p 2674 -sV <host>
sudo nmap -sU -p 2674 <host>
nc -zv <host> 2674

Block it in the firewall

sudo ufw deny 2674/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2674" -Direction Inbound -LocalPort 2674 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2674 used for?

Port 2674 is assigned by IANA to ewnn (ewnn).

Is port 2674 TCP or UDP?

Port 2674 is registered for TCP and UDP.

Is it safe to open port 2674?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 2674 is open?

On Linux run "ss -ltnup 'sport = :2674'", on macOS "lsof -nP -i :2674", and on Windows "netstat -ano | findstr :2674" to see the local process. From another machine, "nmap -p 2674 <host>" shows whether it is reachable.

05 Related
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