CyberHunter
Local dataset, no network
// Other services

Port 3975: Air Shot

Port 3975 is assigned by IANA to airshot (Air Shot).

3975

How airshot works

Other services
client:3975airshotresponse client:3975airshotresponse

The client sends a request to port 3975 and the airshot 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 3975 dangerous?

We have no specific security note for port 3975. 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 3975

ServicePortTransportDescriptionReferenceUpdated
airshot 3975 TCP, UDP Air Shot - 2005-08

// source: IANA service name and port number registry

03 Check it

Which program uses port 3975, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3975'      # process listening on 3975
sudo lsof -nP -i :3975

macOS

sudo lsof -nP -i :3975

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3975 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3975
netstat -ano | findstr :3975

From another machine

nmap -p 3975 -sV <host>
sudo nmap -sU -p 3975 <host>
nc -zv <host> 3975

Block it in the firewall

sudo ufw deny 3975/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3975" -Direction Inbound -LocalPort 3975 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3975 used for?

Port 3975 is assigned by IANA to airshot (Air Shot).

Is port 3975 TCP or UDP?

Port 3975 is registered for TCP and UDP.

Is it safe to open port 3975?

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 3975 is open?

On Linux run "ss -ltnup 'sport = :3975'", on macOS "lsof -nP -i :3975", and on Windows "netstat -ano | findstr :3975" to see the local process. From another machine, "nmap -p 3975 <host>" shows whether it is reachable.

05 Related
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