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// Other services

Port 8111: Skynetflow network services

Port 8111 is assigned by IANA to skynetflow (Skynetflow network services).

8111

How skynetflow works

Other services
client:8111skynetflowresponse client:8111skynetflowresponse

The client sends a request to port 8111 and the skynetflow 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 8111 dangerous?

We have no specific security note for port 8111. 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 8111

ServicePortTransportDescriptionReferenceUpdated
skynetflow 8111 UDP Skynetflow network services - 2019-05-28
-8111-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 8111, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8111'      # process listening on 8111
sudo lsof -nP -i :8111

macOS

sudo lsof -nP -i :8111

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8111 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8111
netstat -ano | findstr :8111

From another machine

nmap -p 8111 -sV <host>
sudo nmap -sU -p 8111 <host>
nc -zv <host> 8111

Block it in the firewall

sudo ufw deny 8111/udp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8111" -Direction Inbound -LocalPort 8111 -Protocol UDP -Action Block  # Windows
04 FAQ
What is port 8111 used for?

Port 8111 is assigned by IANA to skynetflow (Skynetflow network services).

Is port 8111 TCP or UDP?

Port 8111 is registered for UDP.

Is it safe to open port 8111?

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 8111 is open?

On Linux run "ss -ltnup 'sport = :8111'", on macOS "lsof -nP -i :8111", and on Windows "netstat -ano | findstr :8111" to see the local process. From another machine, "nmap -p 8111 <host>" shows whether it is reachable.

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