Network-Query-Tool

The source code demonstrates strong security practices for a PHP web application. It includes robust security headers (e.g., Strict-Transport-Security, X-Frame-Options, Content-Security-Policy with nonce), enforces HTTPS redirection, uses `htmlspecialchars()` for output encoding to prevent XSS, and `filter_var()` for input validation. Dangerous functions like `eval()` or direct shell command execution (`exec`, `shell_exec`) are not present. Network operations (WHOIS, DNS, ASN lookup) are performed using standard PHP functions (`fsockopen`, `gethostbyaddr`, `dns_get_record`) which are generally safe when inputs are validated. The 'ip.php' file is intentionally empty. The primary 'risk' is inherent to any tool performing network queries, requiring outbound internet access, but the implementation itself appears secure.