All ports
Port1938/UDP
jwclientPort
1938
Protocol
UDP
Category
Registered
Service
jwclient
What is port 1938?
Port 1938/UDP is a Registered port, registered with IANA for specific applications. It is associated with the jwclient service.
JetVWay Client Port
Useful commands
nmapnmap -p 1938 -sV example.comnetcatnc -zv example.com 1938curlcurl -v http://example.com:1938/telnettelnet example.com 1938bash(echo > /dev/udp/example.com/1938) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 1938/udpDeny
sudo ufw deny 1938/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 1938 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 1938 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=1938/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 1938" dir=in action=allow protocol=UDP localport=1938Security 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- Outdated versions with vulnerabilities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 1938/UDP?
Port 1938/UDP is associated with the jwclient service. JetVWay Client Port
Is it safe to expose port 1938 to the Internet?
It depends on the service and configuration. Port 1938 (jwclient) 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 1938 is open?
You can use nmap: `nmap -p 1938 -sV example.com`, netcat: `nc -zv example.com 1938`, or the bash command: `(echo > /dev/udp/example.com/1938) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 1938 on my firewall?
On Linux with UFW: `sudo ufw allow 1938/udp` (open) or `sudo ufw deny 1938/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 1938 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 1938" dir=in action=allow protocol=UDP localport=1938`.
What applications and services use port 1938?
Port 1938/UDP is used by the jwclient service. Specific uses depend on the software and configuration. Check our related tools section for more information.