Terms of use

Secure Your Server (secure-your-server.com / sichere-deinen-server.de) is a free, non-commercial security scanning tool. By using it, you agree to the following:

1. Only scan what you're authorized to scan

You may only submit targets (IP addresses, domains, email addresses) that you own, operate, or are otherwise explicitly authorized to test. Scanning third-party infrastructure without authorization may be illegal in your jurisdiction — that responsibility is yours, not ours.

2. What the scanner actually does

Most checks (DNS, SPF/DKIM/DMARC, TLS/SSL handshake analysis, SSH banner/algorithm negotiation, HTTP security headers, WHOIS, PGP/WKD lookup) are passive — the same kind of standard protocol negotiation any browser, mail client, or search engine performs routinely.

A full, multi-port scan (nmap, up to 1000 ports) is active and only unlocked after you prove control over the target domain (DNS TXT record or well-known file). Without verification, only the top 20 most common ports are checked.

3. Rate limiting & abuse prevention

Requests are rate-limited per IP address. We log the scanned target, the requesting IP address, and a timestamp for up to 30 days solely to investigate abuse reports — see ourprivacy policy. If you believe this service was used to scan your infrastructure without authorization, see our abuse contact page.

4. No warranty

This tool is provided free of charge, without any warranty, and on a best-effort basis. Results are a snapshot in time and do not constitute a professional security audit. We are not liable for decisions made based on these results, nor for downtime or side effects the scans may cause on your own infrastructure.

5. Free, forever

This service will never require an account, a subscription, or payment. No third-party trackers, no ads.

This is a plain-language summary, not a formal legal contract. See theimprint for the operator's contact details.