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// Other services

Port 2995: IDRS

Port 2995 is assigned by IANA to idrs (IDRS).

2995

How idrs works

Other services
client:2995idrsresponse client:2995idrsresponse

The client sends a request to port 2995 and the idrs 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 2995 dangerous?

We have no specific security note for port 2995. 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 2995

ServicePortTransportDescriptionReferenceUpdated
idrs 2995 TCP, UDP IDRS - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2995, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2995'      # process listening on 2995
sudo lsof -nP -i :2995

macOS

sudo lsof -nP -i :2995

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2995 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2995
netstat -ano | findstr :2995

From another machine

nmap -p 2995 -sV <host>
sudo nmap -sU -p 2995 <host>
nc -zv <host> 2995

Block it in the firewall

sudo ufw deny 2995/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2995" -Direction Inbound -LocalPort 2995 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2995 used for?

Port 2995 is assigned by IANA to idrs (IDRS).

Is port 2995 TCP or UDP?

Port 2995 is registered for TCP and UDP.

Is it safe to open port 2995?

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 2995 is open?

On Linux run "ss -ltnup 'sport = :2995'", on macOS "lsof -nP -i :2995", and on Windows "netstat -ano | findstr :2995" to see the local process. From another machine, "nmap -p 2995 <host>" shows whether it is reachable.

05 Related
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