All ports
Port3816/UDP
sunlps-httpPort
3816
Protocol
UDP
Category
Registered
Service
sunlps-http
What is port 3816?
Port 3816/UDP is a Registered port, registered with IANA for specific applications. It is associated with the sunlps-http service.
Sun Local Patch Server
Useful commands
nmapnmap -p 3816 -sV example.comnetcatnc -zv example.com 3816curlcurl -v http://example.com:3816/telnettelnet example.com 3816bash(echo > /dev/udp/example.com/3816) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3816/udpDeny
sudo ufw deny 3816/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 3816 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 3816 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3816/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3816" dir=in action=allow protocol=UDP localport=3816Security Risks
- SQL injection and cross-site scripting (XSS)
- Exposure of sensitive data due to lack of encryption
- Denial of service attacks (DoS)
- Directory traversal and exposure of sensitive files
- Brute force attacks against authentication forms
Frequently Asked Questions
What service runs on port 3816/UDP?
Port 3816/UDP is associated with the sunlps-http service. Sun Local Patch Server
Is it safe to expose port 3816 to the Internet?
It depends on the service and configuration. Port 3816 (sunlps-http) 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 3816 is open?
You can use nmap: `nmap -p 3816 -sV example.com`, netcat: `nc -zv example.com 3816`, or the bash command: `(echo > /dev/udp/example.com/3816) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3816 on my firewall?
On Linux with UFW: `sudo ufw allow 3816/udp` (open) or `sudo ufw deny 3816/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 3816 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3816" dir=in action=allow protocol=UDP localport=3816`.
What applications and services use port 3816?
Port 3816/UDP is used by the sunlps-http service. Specific uses depend on the software and configuration. Check our related tools section for more information.