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// Other services

Port 6081: Generic Network Virtualization Encapsulation (Geneve)

Port 6081 is assigned by IANA to geneve (Generic Network Virtualization Encapsulation (Geneve)).

6081

How geneve works

Other services
client:6081geneveresponse client:6081geneveresponse

The client sends a request to port 6081 and the geneve 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 6081 dangerous?

We have no specific security note for port 6081. 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 6081

ServicePortTransportDescriptionReferenceUpdated
geneve 6081 UDP Generic Network Virtualization Encapsulation (Geneve) RFC 8926 2020-05-04
-6081-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 6081, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6081'      # process listening on 6081
sudo lsof -nP -i :6081

macOS

sudo lsof -nP -i :6081

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6081 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6081
netstat -ano | findstr :6081

From another machine

nmap -p 6081 -sV <host>
sudo nmap -sU -p 6081 <host>
nc -zv <host> 6081

Block it in the firewall

sudo ufw deny 6081/udp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6081" -Direction Inbound -LocalPort 6081 -Protocol UDP -Action Block  # Windows
04 FAQ
What is port 6081 used for?

Port 6081 is assigned by IANA to geneve (Generic Network Virtualization Encapsulation (Geneve)).

Is port 6081 TCP or UDP?

Port 6081 is registered for UDP.

Is it safe to open port 6081?

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 6081 is open?

On Linux run "ss -ltnup 'sport = :6081'", on macOS "lsof -nP -i :6081", and on Windows "netstat -ano | findstr :6081" to see the local process. From another machine, "nmap -p 6081 <host>" shows whether it is reachable.

05 Related
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