All ports
Port3103/UDP
autocuesmiPort
3103
Protocol
UDP
Category
Registered
Service
autocuesmi
What is port 3103?
Port 3103/UDP is a Registered port, registered with IANA for specific applications. It is associated with the autocuesmi service.
Autocue SMI Protocol
Useful commands
nmapnmap -p 3103 -sV example.comnetcatnc -zv example.com 3103curlcurl -v http://example.com:3103/telnettelnet example.com 3103bash(echo > /dev/udp/example.com/3103) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3103/udpDeny
sudo ufw deny 3103/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 3103 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 3103 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3103/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3103" dir=in action=allow protocol=UDP localport=3103Security 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- Outdated versions with vulnerabilities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 3103/UDP?
Port 3103/UDP is associated with the autocuesmi service. Autocue SMI Protocol
Is it safe to expose port 3103 to the Internet?
It depends on the service and configuration. Port 3103 (autocuesmi) 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 3103 is open?
You can use nmap: `nmap -p 3103 -sV example.com`, netcat: `nc -zv example.com 3103`, or the bash command: `(echo > /dev/udp/example.com/3103) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3103 on my firewall?
On Linux with UFW: `sudo ufw allow 3103/udp` (open) or `sudo ufw deny 3103/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 3103 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3103" dir=in action=allow protocol=UDP localport=3103`.
What applications and services use port 3103?
Port 3103/UDP is used by the autocuesmi service. Specific uses depend on the software and configuration. Check our related tools section for more information.