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// Other services

Port 6980: QoS-extended OLSR protocol

Port 6980 is assigned by IANA to qolyester (QoS-extended OLSR protocol).

6980

How qolyester works

Other services
client:6980qolyesterresponse client:6980qolyesterresponse

The client sends a request to port 6980 and the qolyester service answers.

Transport
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 6980 dangerous?

We have no specific security note for port 6980. 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 6980

ServicePortTransportDescriptionReferenceUpdated
qolyester 6980 UDP QoS-extended OLSR protocol - 2022-05-24
-6980-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 6980, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6980'      # process listening on 6980
sudo lsof -nP -i :6980

macOS

sudo lsof -nP -i :6980

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6980 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6980
netstat -ano | findstr :6980

From another machine

nmap -p 6980 -sV <host>
sudo nmap -sU -p 6980 <host>
nc -zv <host> 6980

Block it in the firewall

sudo ufw deny 6980/udp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6980" -Direction Inbound -LocalPort 6980 -Protocol UDP -Action Block  # Windows
04 FAQ
What is port 6980 used for?

Port 6980 is assigned by IANA to qolyester (QoS-extended OLSR protocol).

Is port 6980 TCP or UDP?

Port 6980 is registered for UDP.

Is it safe to open port 6980?

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 6980 is open?

On Linux run "ss -ltnup 'sport = :6980'", on macOS "lsof -nP -i :6980", and on Windows "netstat -ano | findstr :6980" to see the local process. From another machine, "nmap -p 6980 <host>" shows whether it is reachable.

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