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// Databases & caches

Port 1830: Oracle Net8 CMan Admin

Port 1830 is assigned by IANA to net8-cman (Oracle Net8 CMan Admin).

1830

How net8-cman works

Databases & caches
app:1830net8-cman app:1830net8-cman

The application sends a SQL query to the net8-cman server on port 1830, 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 1830 dangerous?

We have no specific security note for port 1830. 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 1830

ServicePortTransportDescriptionReferenceUpdated
net8-cman 1830 TCP, UDP Oracle Net8 CMan Admin - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1830, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1830'      # process listening on 1830
sudo lsof -nP -i :1830

macOS

sudo lsof -nP -i :1830

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1830 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1830
netstat -ano | findstr :1830

From another machine

nmap -p 1830 -sV <host>
sudo nmap -sU -p 1830 <host>
nc -zv <host> 1830

Block it in the firewall

sudo ufw deny 1830/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1830" -Direction Inbound -LocalPort 1830 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1830 used for?

Port 1830 is assigned by IANA to net8-cman (Oracle Net8 CMan Admin).

Is port 1830 TCP or UDP?

Port 1830 is registered for TCP and UDP.

Is it safe to open port 1830?

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 1830 is open?

On Linux run "ss -ltnup 'sport = :1830'", on macOS "lsof -nP -i :1830", and on Windows "netstat -ano | findstr :1830" to see the local process. From another machine, "nmap -p 1830 <host>" shows whether it is reachable.

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