/**
 * SSRF Protection Module
 * Validates URLs to prevent Server-Side Request Forgery attacks
 */
/**
 * Validate URL to prevent SSRF attacks
 */
export declare function validateGatewayUrl(urlString: string): {
    valid: boolean;
    error?: string;
};
/**
 * Sanitize URL for logging (remove sensitive parts)
 */
export declare function sanitizeUrlForLogging(urlString: string): string;
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