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// Databases & caches

Port 9981: Event sourcing database engine with a built-in programming language

Port 9981 is assigned by IANA to pumpkindb (Event sourcing database engine with a built-in programming language).

9981

How pumpkindb works

Databases & caches
app:9981pumpkindb app:9981pumpkindb

The application sends a SQL query to the pumpkindb server on port 9981, which returns rows from its tables.

Transport
TCP
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
Databases & caches
01 Security

Is port 9981 dangerous?

We have no specific security note for port 9981. Its risk depends on the program actually listening on it. General advice for databases & caches services:

  • Bind the service to localhost or a private network, never to a public address.
  • Enable authentication, use per-application accounts and require TLS.
  • Watch for exposed Docker ports: publish them on 127.0.0.1 only.
02 Registry

IANA registry entries for port 9981

ServicePortTransportDescriptionReferenceUpdated
pumpkindb 9981 TCP Event sourcing database engine with a built-in programming language - 2017-04-18
-9981-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 9981, and is it reachable?

Linux

sudo ss -ltnup 'sport = :9981'      # process listening on 9981
sudo lsof -nP -i :9981

macOS

sudo lsof -nP -i :9981

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 9981 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 9981
netstat -ano | findstr :9981

From another machine

nmap -p 9981 -sV <host>
nc -zv <host> 9981

Block it in the firewall

sudo ufw deny 9981/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 9981" -Direction Inbound -LocalPort 9981 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 9981 used for?

Port 9981 is assigned by IANA to pumpkindb (Event sourcing database engine with a built-in programming language).

Is port 9981 TCP or UDP?

Port 9981 is registered for TCP.

Is it safe to open port 9981?

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. Bind the service to localhost or a private network, never to a public address.

How do I check if port 9981 is open?

On Linux run "ss -ltnup 'sport = :9981'", on macOS "lsof -nP -i :9981", and on Windows "netstat -ano | findstr :9981" to see the local process. From another machine, "nmap -p 9981 <host>" shows whether it is reachable.

05 Related
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