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StackChanges helps you secure your tech stack. Run quick scans whenever you need them, or let us monitor continuously. We check for open ports using TCP and UDP protocols, track changes in your DNS records and monitor your SSL certificates. Our scanner works with domains, lists with hostnames, IP addresses or entire networks using CIDR notation.

Run instant security scans whenever you need them. Or enable continuous monitoring to get alerts when changes occur. Some features like uptime checks are straightforward. Others like port scanning need more explanation. That's why we created this documentation. Can't find what you need? Contact us anytime.

Want to know what's running on your servers? Check our port number list. Need to secure open ports? Follow our UFW firewall tutorial. After setup, choose between on-demand scans or continuous monitoring. Stop security threats before they impact your business.