All ports
Port3634/UDP
hlibmgrPort
3634
Protocol
UDP
Category
Registered
Service
hlibmgr
What is port 3634?
Port 3634/UDP is a Registered port, registered with IANA for specific applications. It is associated with the hlibmgr service.
hNTSP Library Manager
Useful commands
nmapnmap -p 3634 -sV example.comnetcatnc -zv example.com 3634curlcurl -v http://example.com:3634/telnettelnet example.com 3634bash(echo > /dev/udp/example.com/3634) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3634/udpDeny
sudo ufw deny 3634/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 3634 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 3634 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3634/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3634" dir=in action=allow protocol=UDP localport=3634Security 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- Outdated versions with vulnerabilities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 3634/UDP?
Port 3634/UDP is associated with the hlibmgr service. hNTSP Library Manager
Is it safe to expose port 3634 to the Internet?
It depends on the service and configuration. Port 3634 (hlibmgr) 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 3634 is open?
You can use nmap: `nmap -p 3634 -sV example.com`, netcat: `nc -zv example.com 3634`, or the bash command: `(echo > /dev/udp/example.com/3634) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3634 on my firewall?
On Linux with UFW: `sudo ufw allow 3634/udp` (open) or `sudo ufw deny 3634/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 3634 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3634" dir=in action=allow protocol=UDP localport=3634`.
What applications and services use port 3634?
Port 3634/UDP is used by the hlibmgr service. Specific uses depend on the software and configuration. Check our related tools section for more information.