All ports
Port3696/UDP
telnetcpcdPort
3696
Protocol
UDP
Category
Registered
Service
telnetcpcd
What is port 3696?
Port 3696/UDP is a Registered port, registered with IANA for specific applications. It is associated with the telnetcpcd service.
Telnet Com Port Control
Useful commands
nmapnmap -p 3696 -sV example.comnetcatnc -zv example.com 3696curlcurl -v http://example.com:3696/telnettelnet example.com 3696bash(echo > /dev/udp/example.com/3696) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3696/udpDeny
sudo ufw deny 3696/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 3696 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 3696 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3696/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3696" dir=in action=allow protocol=UDP localport=3696Security 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- Outdated versions with vulnerabilities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 3696/UDP?
Port 3696/UDP is associated with the telnetcpcd service. Telnet Com Port Control
Is it safe to expose port 3696 to the Internet?
It depends on the service and configuration. Port 3696 (telnetcpcd) 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 3696 is open?
You can use nmap: `nmap -p 3696 -sV example.com`, netcat: `nc -zv example.com 3696`, or the bash command: `(echo > /dev/udp/example.com/3696) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3696 on my firewall?
On Linux with UFW: `sudo ufw allow 3696/udp` (open) or `sudo ufw deny 3696/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 3696 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3696" dir=in action=allow protocol=UDP localport=3696`.
What applications and services use port 3696?
Port 3696/UDP is used by the telnetcpcd service. Specific uses depend on the software and configuration. Check our related tools section for more information.