All ports
Port3443/TCP
ov-nnm-websrvPort
3443
Protocol
TCP
Category
Registered
Service
ov-nnm-websrv
What is port 3443?
Port 3443/TCP is a Registered port, registered with IANA for specific applications. It is associated with the ov-nnm-websrv service.
OpenView Network Node Manager WEB Server
Useful commands
nmapnmap -p 3443 -sV example.comnetcatnc -zv example.com 3443curlcurl -v http://example.com:3443/telnettelnet example.com 3443bash(echo > /dev/tcp/example.com/3443) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3443/tcpDeny
sudo ufw deny 3443/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 3443 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 3443 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3443/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3443" dir=in action=allow protocol=TCP localport=3443Security 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- Outdated versions with vulnerabilities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 3443/TCP?
Port 3443/TCP is associated with the ov-nnm-websrv service. OpenView Network Node Manager WEB Server
Is it safe to expose port 3443 to the Internet?
It depends on the service and configuration. Port 3443 (ov-nnm-websrv) 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 3443 is open?
You can use nmap: `nmap -p 3443 -sV example.com`, netcat: `nc -zv example.com 3443`, or the bash command: `(echo > /dev/tcp/example.com/3443) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3443 on my firewall?
On Linux with UFW: `sudo ufw allow 3443/tcp` (open) or `sudo ufw deny 3443/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 3443 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3443" dir=in action=allow protocol=TCP localport=3443`.
What applications and services use port 3443?
Port 3443/TCP is used by the ov-nnm-websrv service. Specific uses depend on the software and configuration. Check our related tools section for more information.