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// Other services

Port 3354: SUITJD

Port 3354 is assigned by IANA to suitjd (SUITJD).

3354

How suitjd works

Other services
client:3354suitjdresponse client:3354suitjdresponse

The client sends a request to port 3354 and the suitjd 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 3354 dangerous?

We have no specific security note for port 3354. 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 3354

ServicePortTransportDescriptionReferenceUpdated
suitjd 3354 TCP, UDP SUITJD - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3354, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3354'      # process listening on 3354
sudo lsof -nP -i :3354

macOS

sudo lsof -nP -i :3354

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3354 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3354
netstat -ano | findstr :3354

From another machine

nmap -p 3354 -sV <host>
sudo nmap -sU -p 3354 <host>
nc -zv <host> 3354

Block it in the firewall

sudo ufw deny 3354/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3354" -Direction Inbound -LocalPort 3354 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3354 used for?

Port 3354 is assigned by IANA to suitjd (SUITJD).

Is port 3354 TCP or UDP?

Port 3354 is registered for TCP and UDP.

Is it safe to open port 3354?

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 3354 is open?

On Linux run "ss -ltnup 'sport = :3354'", on macOS "lsof -nP -i :3354", and on Windows "netstat -ano | findstr :3354" to see the local process. From another machine, "nmap -p 3354 <host>" shows whether it is reachable.

05 Related
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