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// Databases & caches

Port 12005: DBISAM Database Server - Regular

Port 12005 is assigned by IANA to dbisamserver1 (DBISAM Database Server - Regular).

12005

How dbisamserver1 works

Databases & caches
app:12005dbisamserver1 app:12005dbisamserver1

The application sends a SQL query to the dbisamserver1 server on port 12005, 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 12005 dangerous?

We have no specific security note for port 12005. 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 12005

ServicePortTransportDescriptionReferenceUpdated
dbisamserver1 12005 TCP, UDP DBISAM Database Server - Regular - 2002-05

// source: IANA service name and port number registry

03 Check it

Which program uses port 12005, and is it reachable?

Linux

sudo ss -ltnup 'sport = :12005'      # process listening on 12005
sudo lsof -nP -i :12005

macOS

sudo lsof -nP -i :12005

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 12005 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 12005
netstat -ano | findstr :12005

From another machine

nmap -p 12005 -sV <host>
sudo nmap -sU -p 12005 <host>
nc -zv <host> 12005

Block it in the firewall

sudo ufw deny 12005/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 12005" -Direction Inbound -LocalPort 12005 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 12005 used for?

Port 12005 is assigned by IANA to dbisamserver1 (DBISAM Database Server - Regular).

Is port 12005 TCP or UDP?

Port 12005 is registered for TCP and UDP.

Is it safe to open port 12005?

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 12005 is open?

On Linux run "ss -ltnup 'sport = :12005'", on macOS "lsof -nP -i :12005", and on Windows "netstat -ano | findstr :12005" to see the local process. From another machine, "nmap -p 12005 <host>" shows whether it is reachable.

05 Related
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