CyberHunter
Local dataset, no network
// Other services

Port 3021: AGRI Server

Port 3021 is assigned by IANA to agriserver (AGRI Server).

3021

How agriserver works

Other services
client:3021agriserverresponse client:3021agriserverresponse

The client sends a request to port 3021 and the agriserver 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 3021 dangerous?

We have no specific security note for port 3021. 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 3021

ServicePortTransportDescriptionReferenceUpdated
agriserver 3021 TCP, UDP AGRI Server - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3021, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3021'      # process listening on 3021
sudo lsof -nP -i :3021

macOS

sudo lsof -nP -i :3021

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3021 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3021
netstat -ano | findstr :3021

From another machine

nmap -p 3021 -sV <host>
sudo nmap -sU -p 3021 <host>
nc -zv <host> 3021

Block it in the firewall

sudo ufw deny 3021/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3021" -Direction Inbound -LocalPort 3021 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3021 used for?

Port 3021 is assigned by IANA to agriserver (AGRI Server).

Is port 3021 TCP or UDP?

Port 3021 is registered for TCP and UDP.

Is it safe to open port 3021?

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 3021 is open?

On Linux run "ss -ltnup 'sport = :3021'", on macOS "lsof -nP -i :3021", and on Windows "netstat -ano | findstr :3021" to see the local process. From another machine, "nmap -p 3021 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

Latest vulnerability news

All news