All ports
Port3581/UDP
kfxaclicensingPort
3581
Protocol
UDP
Category
Registered
Service
kfxaclicensing
What is port 3581?
Port 3581/UDP is a Registered port, registered with IANA for specific applications. It is associated with the kfxaclicensing service.
Ascent Capture Licensing
Useful commands
nmapnmap -p 3581 -sV example.comnetcatnc -zv example.com 3581curlcurl -v http://example.com:3581/telnettelnet example.com 3581bash(echo > /dev/udp/example.com/3581) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3581/udpDeny
sudo ufw deny 3581/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 3581 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 3581 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3581/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3581" dir=in action=allow protocol=UDP localport=3581Security Risks
- Unauthorized access to the service
- Data exposure if the service is unauthenticated
- Outdated versions with vulnerabilities
- Incorrect service configuration
Frequently Asked Questions
What service runs on port 3581/UDP?
Port 3581/UDP is associated with the kfxaclicensing service. Ascent Capture Licensing
Is it safe to expose port 3581 to the Internet?
It depends on the service and configuration. Port 3581 (kfxaclicensing) is a Registered port. If you need to expose it, keep the service updated, use strong authentication, and configure a firewall. It's always recommended to restrict access by IP when possible.
How do I check if port 3581 is open?
You can use nmap: `nmap -p 3581 -sV example.com`, netcat: `nc -zv example.com 3581`, or the bash command: `(echo > /dev/udp/example.com/3581) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3581 on my firewall?
On Linux with UFW: `sudo ufw allow 3581/udp` (open) or `sudo ufw deny 3581/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 3581 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3581" dir=in action=allow protocol=UDP localport=3581`.
What applications and services use port 3581?
Port 3581/UDP is used by the kfxaclicensing service. Specific uses depend on the software and configuration. Check our related tools section for more information.