ISPConfig
What is Port 9500?
Port 9500 is used by ISPConfig, an open-source web hosting control panel for Linux servers. ISPConfig provides a web-based interface for managing web servers (Apache/Nginx), email servers (Postfix/Dovecot), DNS (BIND), databases (MySQL/MariaDB), and FTP services. The control panel supports multi-server management, where a single ISPConfig instance can manage services across multiple servers. It's an alternative to cPanel for Linux hosting, offering features like automatic Let's Encrypt certificate management, firewall configuration, and website statistics. ISPConfig is popular among small hosting providers and system administrators who manage their own servers.
Common Uses
- ISPConfig web hosting control panel
- Multi-server hosting management
- Web, email, and DNS administration
- Hosting account provisioning
Technical Details
Copy-paste commands to check port 9500 (ISPConfig) from your terminal
Test connectivity
nc -zv example.com 9500
curl -v --max-time 5 http://example.com:9500/
telnet example.com 9500
nmap -p 9500 -sV example.com
(echo > /dev/tcp/example.com/9500) 2>/dev/null && echo "open" || echo "closed"
Open port in firewall
sudo ufw allow 9500/tcp
sudo iptables -A INPUT -p tcp --dport 9500 -j ACCEPT
sudo firewall-cmd --permanent --add-port=9500/tcp && sudo firewall-cmd --reload
Security Considerations
Use HTTPS for ISPConfig access. Change the default port if desired for obscurity. Enable strong passwords and consider IP-based access restrictions. Keep ISPConfig and all managed services updated.
Popular Ports Reference
The most commonly used and referenced network ports