CyberHunter
Local dataset, no network
// Other services

Port 1971: NetOp School

Port 1971 is assigned by IANA to netop-school (NetOp School).

1971

How netop-school works

Other services
client:1971netop-schoolresponse client:1971netop-schoolresponse

The client sends a request to port 1971 and the netop-school 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 1971 dangerous?

We have no specific security note for port 1971. 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 1971

ServicePortTransportDescriptionReferenceUpdated
netop-school 1971 TCP, UDP NetOp School - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1971, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1971'      # process listening on 1971
sudo lsof -nP -i :1971

macOS

sudo lsof -nP -i :1971

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1971 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1971
netstat -ano | findstr :1971

From another machine

nmap -p 1971 -sV <host>
sudo nmap -sU -p 1971 <host>
nc -zv <host> 1971

Block it in the firewall

sudo ufw deny 1971/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1971" -Direction Inbound -LocalPort 1971 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1971 used for?

Port 1971 is assigned by IANA to netop-school (NetOp School).

Is port 1971 TCP or UDP?

Port 1971 is registered for TCP and UDP.

Is it safe to open port 1971?

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 1971 is open?

On Linux run "ss -ltnup 'sport = :1971'", on macOS "lsof -nP -i :1971", and on Windows "netstat -ano | findstr :1971" to see the local process. From another machine, "nmap -p 1971 <host>" shows whether it is reachable.

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