CyberHunter
Local dataset, no network
// Other services

Port 3526: starQuiz Port

Port 3526 is assigned by IANA to starquiz-port (starQuiz Port).

3526

How starquiz-port works

Other services
client:3526starquiz-portresponse client:3526starquiz-portresponse

The client sends a request to port 3526 and the starquiz-port 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 3526 dangerous?

We have no specific security note for port 3526. 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 3526

ServicePortTransportDescriptionReferenceUpdated
starquiz-port 3526 TCP, UDP starQuiz Port - 2002-06

// source: IANA service name and port number registry

03 Check it

Which program uses port 3526, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3526'      # process listening on 3526
sudo lsof -nP -i :3526

macOS

sudo lsof -nP -i :3526

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3526 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3526
netstat -ano | findstr :3526

From another machine

nmap -p 3526 -sV <host>
sudo nmap -sU -p 3526 <host>
nc -zv <host> 3526

Block it in the firewall

sudo ufw deny 3526/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3526" -Direction Inbound -LocalPort 3526 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3526 used for?

Port 3526 is assigned by IANA to starquiz-port (starQuiz Port).

Is port 3526 TCP or UDP?

Port 3526 is registered for TCP and UDP.

Is it safe to open port 3526?

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 3526 is open?

On Linux run "ss -ltnup 'sport = :3526'", on macOS "lsof -nP -i :3526", and on Windows "netstat -ano | findstr :3526" to see the local process. From another machine, "nmap -p 3526 <host>" shows whether it is reachable.

05 Related
: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

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