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// Databases & caches

Port 12006: DBISAM Database Server - Admin

Port 12006 is assigned by IANA to dbisamserver2 (DBISAM Database Server - Admin).

12006

How dbisamserver2 works

Databases & caches
app:12006dbisamserver2 app:12006dbisamserver2

The application sends a SQL query to the dbisamserver2 server on port 12006, which returns rows from its tables.

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
Databases & caches
01 Security

Is port 12006 dangerous?

We have no specific security note for port 12006. 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 12006

ServicePortTransportDescriptionReferenceUpdated
dbisamserver2 12006 TCP, UDP DBISAM Database Server - Admin - 2002-05

// source: IANA service name and port number registry

03 Check it

Which program uses port 12006, and is it reachable?

Linux

sudo ss -ltnup 'sport = :12006'      # process listening on 12006
sudo lsof -nP -i :12006

macOS

sudo lsof -nP -i :12006

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 12006 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 12006
netstat -ano | findstr :12006

From another machine

nmap -p 12006 -sV <host>
sudo nmap -sU -p 12006 <host>
nc -zv <host> 12006

Block it in the firewall

sudo ufw deny 12006/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 12006" -Direction Inbound -LocalPort 12006 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 12006 used for?

Port 12006 is assigned by IANA to dbisamserver2 (DBISAM Database Server - Admin).

Is port 12006 TCP or UDP?

Port 12006 is registered for TCP and UDP.

Is it safe to open port 12006?

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 12006 is open?

On Linux run "ss -ltnup 'sport = :12006'", on macOS "lsof -nP -i :12006", and on Windows "netstat -ano | findstr :12006" to see the local process. From another machine, "nmap -p 12006 <host>" shows whether it is reachable.

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