CyberHunter
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// Other services

Port 2999: RemoteWare Unassigned

Port 2999 is assigned by IANA to remoteware-un (RemoteWare Unassigned).

2999

How remoteware-un works

Other services
client:2999remoteware-unresponse client:2999remoteware-unresponse

The client sends a request to port 2999 and the remoteware-un 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 2999 dangerous?

We have no specific security note for port 2999. 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 2999

ServicePortTransportDescriptionReferenceUpdated
remoteware-un 2999 TCP, UDP RemoteWare Unassigned - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2999, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2999'      # process listening on 2999
sudo lsof -nP -i :2999

macOS

sudo lsof -nP -i :2999

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2999 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2999
netstat -ano | findstr :2999

From another machine

nmap -p 2999 -sV <host>
sudo nmap -sU -p 2999 <host>
nc -zv <host> 2999

Block it in the firewall

sudo ufw deny 2999/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2999" -Direction Inbound -LocalPort 2999 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2999 used for?

Port 2999 is assigned by IANA to remoteware-un (RemoteWare Unassigned).

Is port 2999 TCP or UDP?

Port 2999 is registered for TCP and UDP.

Is it safe to open port 2999?

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 2999 is open?

On Linux run "ss -ltnup 'sport = :2999'", on macOS "lsof -nP -i :2999", and on Windows "netstat -ano | findstr :2999" to see the local process. From another machine, "nmap -p 2999 <host>" shows whether it is reachable.

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