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// Other services

Port 5020: zenginkyo-1

Port 5020 is assigned by IANA to zenginkyo-1 (zenginkyo-1).

5020

How zenginkyo-1 works

Other services
client:5020zenginkyo-1response client:5020zenginkyo-1response

The client sends a request to port 5020 and the zenginkyo-1 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 5020 dangerous?

We have no specific security note for port 5020. 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 5020

ServicePortTransportDescriptionReferenceUpdated
zenginkyo-1 5020 TCP, UDP zenginkyo-1 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 5020, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5020'      # process listening on 5020
sudo lsof -nP -i :5020

macOS

sudo lsof -nP -i :5020

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5020 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5020
netstat -ano | findstr :5020

From another machine

nmap -p 5020 -sV <host>
sudo nmap -sU -p 5020 <host>
nc -zv <host> 5020

Block it in the firewall

sudo ufw deny 5020/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5020" -Direction Inbound -LocalPort 5020 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5020 used for?

Port 5020 is assigned by IANA to zenginkyo-1 (zenginkyo-1).

Is port 5020 TCP or UDP?

Port 5020 is registered for TCP and UDP.

Is it safe to open port 5020?

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 5020 is open?

On Linux run "ss -ltnup 'sport = :5020'", on macOS "lsof -nP -i :5020", and on Windows "netstat -ano | findstr :5020" to see the local process. From another machine, "nmap -p 5020 <host>" shows whether it is reachable.

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