All ports
Port45/UDP
mpmPort
45
Protocol
UDP
Category
Well-Known
Service
mpm
What is port 45?
Port 45/UDP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the mpm service.
Message Processing Module [recv]
Useful commands
nmapnmap -p 45 -sV example.comnetcatnc -zv example.com 45curlcurl -v http://example.com:45/telnettelnet example.com 45bash(echo > /dev/udp/example.com/45) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 45/udpDeny
sudo ufw deny 45/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 45 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 45 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=45/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 45" dir=in action=allow protocol=UDP localport=45Security 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- Outdated versions with vulnerabilities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 45/UDP?
Port 45/UDP is associated with the mpm service. Message Processing Module [recv]
Is it safe to expose port 45 to the Internet?
It depends on the service and configuration. Port 45 (mpm) 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 45 is open?
You can use nmap: `nmap -p 45 -sV example.com`, netcat: `nc -zv example.com 45`, or the bash command: `(echo > /dev/udp/example.com/45) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 45 on my firewall?
On Linux with UFW: `sudo ufw allow 45/udp` (open) or `sudo ufw deny 45/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 45 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 45" dir=in action=allow protocol=UDP localport=45`.
What applications and services use port 45?
Port 45/UDP is used by the mpm service. Specific uses depend on the software and configuration. Check our related tools section for more information.