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// Other services

Port 2205: Java Presentation Server

Port 2205 is assigned by IANA to jps (Java Presentation Server).

2205

How jps works

Other services
client:2205jpsresponse client:2205jpsresponse

The client sends a request to port 2205 and the jps 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 2205 dangerous?

We have no specific security note for port 2205. 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 2205

ServicePortTransportDescriptionReferenceUpdated
jps 2205 TCP, UDP Java Presentation Server - 2006-01

// source: IANA service name and port number registry

03 Check it

Which program uses port 2205, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2205'      # process listening on 2205
sudo lsof -nP -i :2205

macOS

sudo lsof -nP -i :2205

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2205 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2205
netstat -ano | findstr :2205

From another machine

nmap -p 2205 -sV <host>
sudo nmap -sU -p 2205 <host>
nc -zv <host> 2205

Block it in the firewall

sudo ufw deny 2205/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2205" -Direction Inbound -LocalPort 2205 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2205 used for?

Port 2205 is assigned by IANA to jps (Java Presentation Server).

Is port 2205 TCP or UDP?

Port 2205 is registered for TCP and UDP.

Is it safe to open port 2205?

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 2205 is open?

On Linux run "ss -ltnup 'sport = :2205'", on macOS "lsof -nP -i :2205", and on Windows "netstat -ano | findstr :2205" to see the local process. From another machine, "nmap -p 2205 <host>" shows whether it is reachable.

05 Related
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