- 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 5242: ATTUne API
Port 5242 is assigned by IANA to attune (ATTUne API).
5242
How attune works
Other servicesThe client sends a request to port 5242 and the attune 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 5242 dangerous?
We have no specific security note for port 5242. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 5242
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| attune | 5242 | TCP | ATTUne API | - | 2022-06-01 |
| - | 5242 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 5242, and is it reachable?
Linux
sudo ss -ltnup 'sport = :5242' # process listening on 5242
sudo lsof -nP -i :5242macOS
sudo lsof -nP -i :5242
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5242 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 5242 netstat -ano | findstr :5242
From another machine
nmap -p 5242 -sV <host> nc -zv <host> 5242
Block it in the firewall
sudo ufw deny 5242/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 5242" -Direction Inbound -LocalPort 5242 -Protocol TCP -Action Block # Windows
What is port 5242 used for?
Port 5242 is assigned by IANA to attune (ATTUne API).
Is port 5242 TCP or UDP?
Port 5242 is registered for TCP.
Is it safe to open port 5242?
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 5242 is open?
On Linux run "ss -ltnup 'sport = :5242'", on macOS "lsof -nP -i :5242", and on Windows "netstat -ano | findstr :5242" to see the local process. From another machine, "nmap -p 5242 <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