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// Other services

Port 2900: QUICKSUITE

Port 2900 is assigned by IANA to quicksuite (QUICKSUITE).

2900

How quicksuite works

Other services
client:2900quicksuiteresponse client:2900quicksuiteresponse

The client sends a request to port 2900 and the quicksuite 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 2900 dangerous?

We have no specific security note for port 2900. 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 2900

ServicePortTransportDescriptionReferenceUpdated
quicksuite 2900 TCP, UDP QUICKSUITE - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2900, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2900'      # process listening on 2900
sudo lsof -nP -i :2900

macOS

sudo lsof -nP -i :2900

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2900 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2900
netstat -ano | findstr :2900

From another machine

nmap -p 2900 -sV <host>
sudo nmap -sU -p 2900 <host>
nc -zv <host> 2900

Block it in the firewall

sudo ufw deny 2900/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2900" -Direction Inbound -LocalPort 2900 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2900 used for?

Port 2900 is assigned by IANA to quicksuite (QUICKSUITE).

Is port 2900 TCP or UDP?

Port 2900 is registered for TCP and UDP.

Is it safe to open port 2900?

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 2900 is open?

On Linux run "ss -ltnup 'sport = :2900'", on macOS "lsof -nP -i :2900", and on Windows "netstat -ano | findstr :2900" to see the local process. From another machine, "nmap -p 2900 <host>" shows whether it is reachable.

05 Related
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