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// Other services

Port 1975: TCO Flash Agent

Port 1975 is assigned by IANA to tcoflashagent (TCO Flash Agent).

1975

How tcoflashagent works

Other services
client:1975tcoflashagentresponse client:1975tcoflashagentresponse

The client sends a request to port 1975 and the tcoflashagent 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 1975 dangerous?

We have no specific security note for port 1975. 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 1975

ServicePortTransportDescriptionReferenceUpdated
tcoflashagent 1975 TCP, UDP TCO Flash Agent - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1975, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1975'      # process listening on 1975
sudo lsof -nP -i :1975

macOS

sudo lsof -nP -i :1975

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1975 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1975
netstat -ano | findstr :1975

From another machine

nmap -p 1975 -sV <host>
sudo nmap -sU -p 1975 <host>
nc -zv <host> 1975

Block it in the firewall

sudo ufw deny 1975/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1975" -Direction Inbound -LocalPort 1975 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1975 used for?

Port 1975 is assigned by IANA to tcoflashagent (TCO Flash Agent).

Is port 1975 TCP or UDP?

Port 1975 is registered for TCP and UDP.

Is it safe to open port 1975?

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 1975 is open?

On Linux run "ss -ltnup 'sport = :1975'", on macOS "lsof -nP -i :1975", and on Windows "netstat -ano | findstr :1975" to see the local process. From another machine, "nmap -p 1975 <host>" shows whether it is reachable.

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