All ports
Port3493/TCP
nutPort
3493
Protocol
TCP
Category
Registered
Service
nut
What is port 3493?
Port 3493/TCP is a Registered port, registered with IANA for specific applications. It is associated with the nut service.
Network UPS Tools
Useful commands
nmapnmap -p 3493 -sV example.comnetcatnc -zv example.com 3493curlcurl -v http://example.com:3493/telnettelnet example.com 3493bash(echo > /dev/tcp/example.com/3493) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3493/tcpDeny
sudo ufw deny 3493/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 3493 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 3493 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3493/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3493" dir=in action=allow protocol=TCP localport=3493Security 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- Outdated versions with vulnerabilities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 3493/TCP?
Port 3493/TCP is associated with the nut service. Network UPS Tools
Is it safe to expose port 3493 to the Internet?
It depends on the service and configuration. Port 3493 (nut) 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 3493 is open?
You can use nmap: `nmap -p 3493 -sV example.com`, netcat: `nc -zv example.com 3493`, or the bash command: `(echo > /dev/tcp/example.com/3493) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3493 on my firewall?
On Linux with UFW: `sudo ufw allow 3493/tcp` (open) or `sudo ufw deny 3493/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 3493 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3493" dir=in action=allow protocol=TCP localport=3493`.
What applications and services use port 3493?
Port 3493/TCP is used by the nut service. Specific uses depend on the software and configuration. Check our related tools section for more information.