All ports
Port48/UDP
auditdPort
48
Protocol
UDP
Category
Well-Known
Service
auditd
What is port 48?
Port 48/UDP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the auditd service.
Digital Audit Daemon
Useful commands
nmapnmap -p 48 -sV example.comnetcatnc -zv example.com 48curlcurl -v http://example.com:48/telnettelnet example.com 48bash(echo > /dev/udp/example.com/48) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 48/udpDeny
sudo ufw deny 48/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 48 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 48 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=48/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 48" dir=in action=allow protocol=UDP localport=48Security 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- Outdated versions with vulnerabilities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 48/UDP?
Port 48/UDP is associated with the auditd service. Digital Audit Daemon
Is it safe to expose port 48 to the Internet?
It depends on the service and configuration. Port 48 (auditd) is a Well-Known 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 48 is open?
You can use nmap: `nmap -p 48 -sV example.com`, netcat: `nc -zv example.com 48`, or the bash command: `(echo > /dev/udp/example.com/48) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 48 on my firewall?
On Linux with UFW: `sudo ufw allow 48/udp` (open) or `sudo ufw deny 48/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 48 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 48" dir=in action=allow protocol=UDP localport=48`.
What applications and services use port 48?
Port 48/UDP is used by the auditd service. Specific uses depend on the software and configuration. Check our related tools section for more information.