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// Databases & caches

Port 9088: IBM Informix SQL Interface

Port 9088 is assigned by IANA to sqlexec (IBM Informix SQL Interface).

9088

How sqlexec works

Databases & caches
app:9088sqlexec app:9088sqlexec

The application sends a SQL query to the sqlexec server on port 9088, 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 9088 dangerous?

We have no specific security note for port 9088. 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 9088

ServicePortTransportDescriptionReferenceUpdated
sqlexec 9088 TCP, UDP IBM Informix SQL Interface - 2005-12

// source: IANA service name and port number registry

03 Check it

Which program uses port 9088, and is it reachable?

Linux

sudo ss -ltnup 'sport = :9088'      # process listening on 9088
sudo lsof -nP -i :9088

macOS

sudo lsof -nP -i :9088

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 9088 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 9088
netstat -ano | findstr :9088

From another machine

nmap -p 9088 -sV <host>
sudo nmap -sU -p 9088 <host>
nc -zv <host> 9088

Block it in the firewall

sudo ufw deny 9088/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 9088" -Direction Inbound -LocalPort 9088 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 9088 used for?

Port 9088 is assigned by IANA to sqlexec (IBM Informix SQL Interface).

Is port 9088 TCP or UDP?

Port 9088 is registered for TCP and UDP.

Is it safe to open port 9088?

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 9088 is open?

On Linux run "ss -ltnup 'sport = :9088'", on macOS "lsof -nP -i :9088", and on Windows "netstat -ano | findstr :9088" to see the local process. From another machine, "nmap -p 9088 <host>" shows whether it is reachable.

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