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// Other services

Port 4375: Toltec EasyShare

Port 4375 is assigned by IANA to tolteces (Toltec EasyShare).

4375

How tolteces works

Other services
client:4375toltecesresponse client:4375toltecesresponse

The client sends a request to port 4375 and the tolteces 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 4375 dangerous?

We have no specific security note for port 4375. 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 4375

ServicePortTransportDescriptionReferenceUpdated
tolteces 4375 TCP, UDP Toltec EasyShare - 2008-10-21

// source: IANA service name and port number registry

03 Check it

Which program uses port 4375, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4375'      # process listening on 4375
sudo lsof -nP -i :4375

macOS

sudo lsof -nP -i :4375

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4375 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4375
netstat -ano | findstr :4375

From another machine

nmap -p 4375 -sV <host>
sudo nmap -sU -p 4375 <host>
nc -zv <host> 4375

Block it in the firewall

sudo ufw deny 4375/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4375" -Direction Inbound -LocalPort 4375 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4375 used for?

Port 4375 is assigned by IANA to tolteces (Toltec EasyShare).

Is port 4375 TCP or UDP?

Port 4375 is registered for TCP and UDP.

Is it safe to open port 4375?

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 4375 is open?

On Linux run "ss -ltnup 'sport = :4375'", on macOS "lsof -nP -i :4375", and on Windows "netstat -ano | findstr :4375" to see the local process. From another machine, "nmap -p 4375 <host>" shows whether it is reachable.

05 Related
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