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// Databases & caches

Port 1630: Oracle Net8 Cman

Port 1630 is assigned by IANA to oraclenet8cman (Oracle Net8 Cman).

1630

How oraclenet8cman works

Databases & caches
app:1630oraclenet8cman app:1630oraclenet8cman

The application sends a SQL query to the oraclenet8cman server on port 1630, 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 1630 dangerous?

We have no specific security note for port 1630. 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 1630

ServicePortTransportDescriptionReferenceUpdated
oraclenet8cman 1630 TCP, UDP Oracle Net8 Cman - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1630, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1630'      # process listening on 1630
sudo lsof -nP -i :1630

macOS

sudo lsof -nP -i :1630

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1630 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1630
netstat -ano | findstr :1630

From another machine

nmap -p 1630 -sV <host>
sudo nmap -sU -p 1630 <host>
nc -zv <host> 1630

Block it in the firewall

sudo ufw deny 1630/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1630" -Direction Inbound -LocalPort 1630 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1630 used for?

Port 1630 is assigned by IANA to oraclenet8cman (Oracle Net8 Cman).

Is port 1630 TCP or UDP?

Port 1630 is registered for TCP and UDP.

Is it safe to open port 1630?

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 1630 is open?

On Linux run "ss -ltnup 'sport = :1630'", on macOS "lsof -nP -i :1630", and on Windows "netstat -ano | findstr :1630" to see the local process. From another machine, "nmap -p 1630 <host>" shows whether it is reachable.

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