All ports
Port3356/TCP
upnotifypsPort
3356
Protocol
TCP
Category
Registered
Service
upnotifyps
What is port 3356?
Port 3356/TCP is a Registered port, registered with IANA for specific applications. It is associated with the upnotifyps service.
UPNOTIFYPS
Useful commands
nmapnmap -p 3356 -sV example.comnetcatnc -zv example.com 3356curlcurl -v http://example.com:3356/telnettelnet example.com 3356bash(echo > /dev/tcp/example.com/3356) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3356/tcpDeny
sudo ufw deny 3356/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 3356 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 3356 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3356/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3356" dir=in action=allow protocol=TCP localport=3356Security 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- Outdated versions with vulnerabilities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 3356/TCP?
Port 3356/TCP is associated with the upnotifyps service. UPNOTIFYPS
Is it safe to expose port 3356 to the Internet?
It depends on the service and configuration. Port 3356 (upnotifyps) 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 3356 is open?
You can use nmap: `nmap -p 3356 -sV example.com`, netcat: `nc -zv example.com 3356`, or the bash command: `(echo > /dev/tcp/example.com/3356) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3356 on my firewall?
On Linux with UFW: `sudo ufw allow 3356/tcp` (open) or `sudo ufw deny 3356/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 3356 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3356" dir=in action=allow protocol=TCP localport=3356`.
What applications and services use port 3356?
Port 3356/TCP is used by the upnotifyps service. Specific uses depend on the software and configuration. Check our related tools section for more information.