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// Other services

Port 3402: FXa Engine Network Port

Port 3402 is assigned by IANA to fxaengine-net (FXa Engine Network Port).

3402

How fxaengine-net works

Other services
client:3402fxaengine-netresponse client:3402fxaengine-netresponse

The client sends a request to port 3402 and the fxaengine-net 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 3402 dangerous?

We have no specific security note for port 3402. 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 3402

ServicePortTransportDescriptionReferenceUpdated
fxaengine-net 3402 TCP, UDP FXa Engine Network Port - 2002-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 3402, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3402'      # process listening on 3402
sudo lsof -nP -i :3402

macOS

sudo lsof -nP -i :3402

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3402 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3402
netstat -ano | findstr :3402

From another machine

nmap -p 3402 -sV <host>
sudo nmap -sU -p 3402 <host>
nc -zv <host> 3402

Block it in the firewall

sudo ufw deny 3402/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3402" -Direction Inbound -LocalPort 3402 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3402 used for?

Port 3402 is assigned by IANA to fxaengine-net (FXa Engine Network Port).

Is port 3402 TCP or UDP?

Port 3402 is registered for TCP and UDP.

Is it safe to open port 3402?

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 3402 is open?

On Linux run "ss -ltnup 'sport = :3402'", on macOS "lsof -nP -i :3402", and on Windows "netstat -ano | findstr :3402" to see the local process. From another machine, "nmap -p 3402 <host>" shows whether it is reachable.

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