All ports
Port3937/UDP
dvbservdscPort
3937
Protocol
UDP
Category
Registered
Service
dvbservdsc
What is port 3937?
Port 3937/UDP is a Registered port, registered with IANA for specific applications. It is associated with the dvbservdsc service.
DVB Service Discovery
Useful commands
nmapnmap -p 3937 -sV example.comnetcatnc -zv example.com 3937curlcurl -v http://example.com:3937/telnettelnet example.com 3937bash(echo > /dev/udp/example.com/3937) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3937/udpDeny
sudo ufw deny 3937/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 3937 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 3937 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3937/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3937" dir=in action=allow protocol=UDP localport=3937Security 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- Outdated versions with vulnerabilities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 3937/UDP?
Port 3937/UDP is associated with the dvbservdsc service. DVB Service Discovery
Is it safe to expose port 3937 to the Internet?
It depends on the service and configuration. Port 3937 (dvbservdsc) 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 3937 is open?
You can use nmap: `nmap -p 3937 -sV example.com`, netcat: `nc -zv example.com 3937`, or the bash command: `(echo > /dev/udp/example.com/3937) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3937 on my firewall?
On Linux with UFW: `sudo ufw allow 3937/udp` (open) or `sudo ufw deny 3937/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 3937 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3937" dir=in action=allow protocol=UDP localport=3937`.
What applications and services use port 3937?
Port 3937/UDP is used by the dvbservdsc service. Specific uses depend on the software and configuration. Check our related tools section for more information.