CyberHunter
Local dataset, no network
// Other services

Port 3440: Net Steward Mgmt Console

Port 3440 is assigned by IANA to ans-console (Net Steward Mgmt Console).

3440

How ans-console works

Other services
client:3440ans-consoleresponse client:3440ans-consoleresponse

The client sends a request to port 3440 and the ans-console 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 3440 dangerous?

We have no specific security note for port 3440. 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 3440

ServicePortTransportDescriptionReferenceUpdated
ans-console 3440 TCP, UDP Net Steward Mgmt Console - 2002-03

// source: IANA service name and port number registry

03 Check it

Which program uses port 3440, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3440'      # process listening on 3440
sudo lsof -nP -i :3440

macOS

sudo lsof -nP -i :3440

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3440 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3440
netstat -ano | findstr :3440

From another machine

nmap -p 3440 -sV <host>
sudo nmap -sU -p 3440 <host>
nc -zv <host> 3440

Block it in the firewall

sudo ufw deny 3440/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3440" -Direction Inbound -LocalPort 3440 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3440 used for?

Port 3440 is assigned by IANA to ans-console (Net Steward Mgmt Console).

Is port 3440 TCP or UDP?

Port 3440 is registered for TCP and UDP.

Is it safe to open port 3440?

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 3440 is open?

On Linux run "ss -ltnup 'sport = :3440'", on macOS "lsof -nP -i :3440", and on Windows "netstat -ano | findstr :3440" to see the local process. From another machine, "nmap -p 3440 <host>" shows whether it is reachable.

05 Related
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