CyberHunter
Local dataset, no network
// Other services

Port 9995: Palace-4

Port 9995 is assigned by IANA to palace-4 (Palace-4).

9995

How palace-4 works

Other services
client:9995palace-4response client:9995palace-4response

The client sends a request to port 9995 and the palace-4 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 9995 dangerous?

We have no specific security note for port 9995. 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 9995

ServicePortTransportDescriptionReferenceUpdated
palace-4 9995 TCP, UDP Palace-4 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 9995, and is it reachable?

Linux

sudo ss -ltnup 'sport = :9995'      # process listening on 9995
sudo lsof -nP -i :9995

macOS

sudo lsof -nP -i :9995

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 9995 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 9995
netstat -ano | findstr :9995

From another machine

nmap -p 9995 -sV <host>
sudo nmap -sU -p 9995 <host>
nc -zv <host> 9995

Block it in the firewall

sudo ufw deny 9995/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 9995" -Direction Inbound -LocalPort 9995 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 9995 used for?

Port 9995 is assigned by IANA to palace-4 (Palace-4).

Is port 9995 TCP or UDP?

Port 9995 is registered for TCP and UDP.

Is it safe to open port 9995?

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 9995 is open?

On Linux run "ss -ltnup 'sport = :9995'", on macOS "lsof -nP -i :9995", and on Windows "netstat -ano | findstr :9995" to see the local process. From another machine, "nmap -p 9995 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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