All ports
Port473/TCP
hybrid-popPort
473
Protocol
TCP
Category
Well-Known
Service
hybrid-pop
What is port 473?
Port 473/TCP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the hybrid-pop service.
hybrid-pop
Useful commands
nmapnmap -p 473 -sV example.comnetcatnc -zv example.com 473curlcurl -v http://example.com:473/telnettelnet example.com 473bash(echo > /dev/tcp/example.com/473) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 473/tcpDeny
sudo ufw deny 473/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 473 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 473 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=473/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 473" dir=in action=allow protocol=TCP localport=473Security 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- Outdated versions with vulnerabilities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 473/TCP?
Port 473/TCP is associated with the hybrid-pop service. hybrid-pop
Is it safe to expose port 473 to the Internet?
It depends on the service and configuration. Port 473 (hybrid-pop) 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 473 is open?
You can use nmap: `nmap -p 473 -sV example.com`, netcat: `nc -zv example.com 473`, or the bash command: `(echo > /dev/tcp/example.com/473) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 473 on my firewall?
On Linux with UFW: `sudo ufw allow 473/tcp` (open) or `sudo ufw deny 473/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 473 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 473" dir=in action=allow protocol=TCP localport=473`.
What applications and services use port 473?
Port 473/TCP is used by the hybrid-pop service. Specific uses depend on the software and configuration. Check our related tools section for more information.