All ports
Port2381/UDP
compaq-httpsPort
2381
Protocol
UDP
Category
Registered
Service
compaq-https
What is port 2381?
Port 2381/UDP is a Registered port, registered with IANA for specific applications. It is associated with the compaq-https service.
Compaq HTTPS
Useful commands
nmapnmap -p 2381 -sV example.comnetcatnc -zv example.com 2381curlcurl -v http://example.com:2381/telnettelnet example.com 2381bash(echo > /dev/udp/example.com/2381) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 2381/udpDeny
sudo ufw deny 2381/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 2381 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 2381 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=2381/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 2381" dir=in action=allow protocol=UDP localport=2381Security Risks
- Incorrect TLS/SSL configuration
- Man-in-the-Middle attacks if certificate is invalid
- Protocol implementation vulnerabilities
- Exposure of web services with weak authentication
Frequently Asked Questions
What service runs on port 2381/UDP?
Port 2381/UDP is associated with the compaq-https service. Compaq HTTPS
Is it safe to expose port 2381 to the Internet?
It depends on the service and configuration. Port 2381 (compaq-https) 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 2381 is open?
You can use nmap: `nmap -p 2381 -sV example.com`, netcat: `nc -zv example.com 2381`, or the bash command: `(echo > /dev/udp/example.com/2381) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 2381 on my firewall?
On Linux with UFW: `sudo ufw allow 2381/udp` (open) or `sudo ufw deny 2381/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 2381 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 2381" dir=in action=allow protocol=UDP localport=2381`.
What applications and services use port 2381?
Port 2381/UDP is used by the compaq-https service. Specific uses depend on the software and configuration. Check our related tools section for more information.