All ports
Port30939/UDP
dilithium3Port
30939
Protocol
UDP
Category
Registered
Service
dilithium3
What is port 30939?
Port 30939/UDP is a Registered port, registered with IANA for specific applications. It is associated with the dilithium3 service.
Kademlia DHT peer discovery and routing table maintenance.
Useful commands
nmapnmap -p 30939 -sV example.comnetcatnc -zv example.com 30939curlcurl -v http://example.com:30939/telnettelnet example.com 30939bash(echo > /dev/udp/example.com/30939) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 30939/udpDeny
sudo ufw deny 30939/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 30939 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 30939 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=30939/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 30939" dir=in action=allow protocol=UDP localport=30939Security 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- Outdated versions with vulnerabilities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 30939/UDP?
Port 30939/UDP is associated with the dilithium3 service. Kademlia DHT peer discovery and routing table maintenance.
Is it safe to expose port 30939 to the Internet?
It depends on the service and configuration. Port 30939 (dilithium3) 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 30939 is open?
You can use nmap: `nmap -p 30939 -sV example.com`, netcat: `nc -zv example.com 30939`, or the bash command: `(echo > /dev/udp/example.com/30939) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 30939 on my firewall?
On Linux with UFW: `sudo ufw allow 30939/udp` (open) or `sudo ufw deny 30939/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 30939 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 30939" dir=in action=allow protocol=UDP localport=30939`.
What applications and services use port 30939?
Port 30939/UDP is used by the dilithium3 service. Specific uses depend on the software and configuration. Check our related tools section for more information.