All ports
Port3959/UDP
treehopperPort
3959
Protocol
UDP
Category
Registered
Service
treehopper
What is port 3959?
Port 3959/UDP is a Registered port, registered with IANA for specific applications. It is associated with the treehopper service.
Tree Hopper Networking
Useful commands
nmapnmap -p 3959 -sV example.comnetcatnc -zv example.com 3959curlcurl -v http://example.com:3959/telnettelnet example.com 3959bash(echo > /dev/udp/example.com/3959) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3959/udpDeny
sudo ufw deny 3959/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 3959 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 3959 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3959/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3959" dir=in action=allow protocol=UDP localport=3959Security 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- Outdated versions with vulnerabilities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 3959/UDP?
Port 3959/UDP is associated with the treehopper service. Tree Hopper Networking
Is it safe to expose port 3959 to the Internet?
It depends on the service and configuration. Port 3959 (treehopper) 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 3959 is open?
You can use nmap: `nmap -p 3959 -sV example.com`, netcat: `nc -zv example.com 3959`, or the bash command: `(echo > /dev/udp/example.com/3959) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3959 on my firewall?
On Linux with UFW: `sudo ufw allow 3959/udp` (open) or `sudo ufw deny 3959/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 3959 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3959" dir=in action=allow protocol=UDP localport=3959`.
What applications and services use port 3959?
Port 3959/UDP is used by the treehopper service. Specific uses depend on the software and configuration. Check our related tools section for more information.