- 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.
Port 3566: Quest Data Hub
Port 3566 is assigned by IANA to quest-data-hub (Quest Data Hub).
3566
How quest-data-hub works
Other servicesThe client sends a request to port 3566 and the quest-data-hub service answers.
- Transport
- TCP
- 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
Is port 3566 dangerous?
We have no specific security note for port 3566. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 3566
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| quest-data-hub | 3566 | TCP | Quest Data Hub | - | 2010-10-18 |
| - | 3566 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 3566, and is it reachable?
Linux
sudo ss -ltnup 'sport = :3566' # process listening on 3566
sudo lsof -nP -i :3566macOS
sudo lsof -nP -i :3566
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3566 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 3566 netstat -ano | findstr :3566
From another machine
nmap -p 3566 -sV <host> nc -zv <host> 3566
Block it in the firewall
sudo ufw deny 3566/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 3566" -Direction Inbound -LocalPort 3566 -Protocol TCP -Action Block # Windows
What is port 3566 used for?
Port 3566 is assigned by IANA to quest-data-hub (Quest Data Hub).
Is port 3566 TCP or UDP?
Port 3566 is registered for TCP.
Is it safe to open port 3566?
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 3566 is open?
On Linux run "ss -ltnup 'sport = :3566'", on macOS "lsof -nP -i :3566", and on Windows "netstat -ano | findstr :3566" to see the local process. From another machine, "nmap -p 3566 <host>" shows whether it is reachable.
Other other services ports
: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