All ports
Port3948/UDP
apdapPort
3948
Protocol
UDP
Category
Registered
Service
apdap
What is port 3948?
Port 3948/UDP is a Registered port, registered with IANA for specific applications. It is associated with the apdap service.
Anton Paar Device Administration Protocol
Useful commands
nmapnmap -p 3948 -sV example.comnetcatnc -zv example.com 3948curlcurl -v http://example.com:3948/telnettelnet example.com 3948bash(echo > /dev/udp/example.com/3948) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3948/udpDeny
sudo ufw deny 3948/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 3948 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 3948 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3948/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3948" dir=in action=allow protocol=UDP localport=3948Security 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- Outdated versions with vulnerabilities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 3948/UDP?
Port 3948/UDP is associated with the apdap service. Anton Paar Device Administration Protocol
Is it safe to expose port 3948 to the Internet?
It depends on the service and configuration. Port 3948 (apdap) 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 3948 is open?
You can use nmap: `nmap -p 3948 -sV example.com`, netcat: `nc -zv example.com 3948`, or the bash command: `(echo > /dev/udp/example.com/3948) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3948 on my firewall?
On Linux with UFW: `sudo ufw allow 3948/udp` (open) or `sudo ufw deny 3948/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 3948 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3948" dir=in action=allow protocol=UDP localport=3948`.
What applications and services use port 3948?
Port 3948/UDP is used by the apdap service. Specific uses depend on the software and configuration. Check our related tools section for more information.