All ports
Port4073/UDP
iRAPPPort
4073
Protocol
UDP
Category
Registered
Service
iRAPP
What is port 4073?
Port 4073/UDP is a Registered port, registered with IANA for specific applications. It is associated with the iRAPP service.
Interactive Remote Application Pairing Protocol
Useful commands
nmapnmap -p 4073 -sV example.comnetcatnc -zv example.com 4073curlcurl -v http://example.com:4073/telnettelnet example.com 4073bash(echo > /dev/udp/example.com/4073) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4073/udpDeny
sudo ufw deny 4073/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 4073 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 4073 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4073/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4073" dir=in action=allow protocol=UDP localport=4073Security 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- Outdated versions with vulnerabilities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 4073/UDP?
Port 4073/UDP is associated with the iRAPP service. Interactive Remote Application Pairing Protocol
Is it safe to expose port 4073 to the Internet?
It depends on the service and configuration. Port 4073 (iRAPP) 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 4073 is open?
You can use nmap: `nmap -p 4073 -sV example.com`, netcat: `nc -zv example.com 4073`, or the bash command: `(echo > /dev/udp/example.com/4073) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4073 on my firewall?
On Linux with UFW: `sudo ufw allow 4073/udp` (open) or `sudo ufw deny 4073/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 4073 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4073" dir=in action=allow protocol=UDP localport=4073`.
What applications and services use port 4073?
Port 4073/UDP is used by the iRAPP service. Specific uses depend on the software and configuration. Check our related tools section for more information.