CyberHunter
Local dataset, no network
// Other services

Port 9993: OnLive-2

Port 9993 is assigned by IANA to palace-2 (OnLive-2).

9993

How palace-2 works

Other services
client:9993palace-2response client:9993palace-2response

The client sends a request to port 9993 and the palace-2 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
Registered (1024-49151)
Category
Other services
01 Security

Is port 9993 dangerous?

We have no specific security note for port 9993. 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 9993

ServicePortTransportDescriptionReferenceUpdated
palace-2 9993 TCP, UDP OnLive-2 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 9993, and is it reachable?

Linux

sudo ss -ltnup 'sport = :9993'      # process listening on 9993
sudo lsof -nP -i :9993

macOS

sudo lsof -nP -i :9993

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 9993 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 9993
netstat -ano | findstr :9993

From another machine

nmap -p 9993 -sV <host>
sudo nmap -sU -p 9993 <host>
nc -zv <host> 9993

Block it in the firewall

sudo ufw deny 9993/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 9993" -Direction Inbound -LocalPort 9993 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 9993 used for?

Port 9993 is assigned by IANA to palace-2 (OnLive-2).

Is port 9993 TCP or UDP?

Port 9993 is registered for TCP and UDP.

Is it safe to open port 9993?

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 9993 is open?

On Linux run "ss -ltnup 'sport = :9993'", on macOS "lsof -nP -i :9993", and on Windows "netstat -ano | findstr :9993" to see the local process. From another machine, "nmap -p 9993 <host>" shows whether it is reachable.

05 Related
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