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// Other services

Port 4348: ITOSE

Port 4348 is assigned by IANA to itose (ITOSE).

4348

How itose works

Other services
client:4348itoseresponse client:4348itoseresponse

The client sends a request to port 4348 and the itose 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 4348 dangerous?

We have no specific security note for port 4348. 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 4348

ServicePortTransportDescriptionReferenceUpdated
itose 4348 TCP, UDP ITOSE - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 4348, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4348'      # process listening on 4348
sudo lsof -nP -i :4348

macOS

sudo lsof -nP -i :4348

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4348 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4348
netstat -ano | findstr :4348

From another machine

nmap -p 4348 -sV <host>
sudo nmap -sU -p 4348 <host>
nc -zv <host> 4348

Block it in the firewall

sudo ufw deny 4348/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4348" -Direction Inbound -LocalPort 4348 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4348 used for?

Port 4348 is assigned by IANA to itose (ITOSE).

Is port 4348 TCP or UDP?

Port 4348 is registered for TCP and UDP.

Is it safe to open port 4348?

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 4348 is open?

On Linux run "ss -ltnup 'sport = :4348'", on macOS "lsof -nP -i :4348", and on Windows "netstat -ano | findstr :4348" to see the local process. From another machine, "nmap -p 4348 <host>" shows whether it is reachable.

05 Related
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