CyberHunter
Local dataset, no network
// Other services

Port 184: OCServer

Port 184 is assigned by IANA to ocserver (OCServer).

184

How ocserver works

Other services
client:184ocserverresponse client:184ocserverresponse

The client sends a request to port 184 and the ocserver service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Well-known (0-1023)
Category
Other services
01 Security

Is port 184 dangerous?

We have no specific security note for port 184. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 184

ServicePortTransportDescriptionReferenceUpdated
ocserver 184 TCP, UDP OCServer - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 184, and is it reachable?

Linux

sudo ss -ltnup 'sport = :184'      # process listening on 184
sudo lsof -nP -i :184

macOS

sudo lsof -nP -i :184

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 184 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 184
netstat -ano | findstr :184

From another machine

nmap -p 184 -sV <host>
sudo nmap -sU -p 184 <host>
nc -zv <host> 184

Block it in the firewall

sudo ufw deny 184/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 184" -Direction Inbound -LocalPort 184 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 184 used for?

Port 184 is assigned by IANA to ocserver (OCServer).

Is port 184 TCP or UDP?

Port 184 is registered for TCP and UDP.

Is it safe to open port 184?

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. Close the port if nothing on the host needs it.

How do I check if port 184 is open?

On Linux run "ss -ltnup 'sport = :184'", on macOS "lsof -nP -i :184", and on Windows "netstat -ano | findstr :184" to see the local process. From another machine, "nmap -p 184 <host>" shows whether it is reachable.

05 Related
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