DNSSEC Validation Scanner
Checks DNSSEC configuration and validation.
What is DNSSEC Validation?
DNSSEC (Domain Name System Security Extensions) adds cryptographic signatures to DNS records, allowing resolvers to verify that responses haven't been tampered with. Testing validates that DNSSEC is properly configured, signatures are valid, key rollovers work correctly, and the chain of trust is maintained.
Why is This Important?
Without DNSSEC, DNS responses can be spoofed, enabling attackers to redirect traffic to malicious servers. DNSSEC prevents DNS cache poisoning and man-in-the-middle attacks at the DNS level. However, misconfigured DNSSEC can break DNS resolution entirely, causing outages.
How It Works
1. Network Discovery
Scans and fingerprints network services, identifying open ports, protocols, and service versions.
2. Protocol Analysis
Tests protocol implementations for misconfigurations, weak encryption, and known vulnerabilities.
3. Infrastructure Assessment
Provides comprehensive network security posture with prioritized remediation recommendations.
Key Capabilities
Enterprise network security assessment covering infrastructure, protocols, and service configurations.
- Comprehensive port and service discovery
- Protocol-specific vulnerability checks
- TLS/SSL configuration analysis
- Legacy protocol detection and assessment
- Network segmentation validation
Frequently Asked Questions
What does DNSSEC protect against?
DNSSEC prevents: DNS cache poisoning (injecting false records), DNS spoofing (returning fake responses), and tampering with DNS data in transit. It proves records are authentic and unmodified. It doesn't encrypt queries (use DoH/DoT for privacy) or prevent DDoS.
What DNSSEC issues should I test for?
Check for: missing DNSKEY records, broken chain of trust (DS records not matching), expired signatures (RRSIG past expiry), algorithm mismatches, missing NSEC/NSEC3 for authenticated denial, and proper key rollover configuration.
Why isn't DNSSEC universally deployed?
Challenges include: complexity of key management and rotation, risk of breaking DNS if misconfigured, increased DNS packet sizes (can cause MTU issues), minimal browser UI indication, and many resolvers not validating. Adoption is growing but slow.
How do I test DNSSEC configuration?
Use tools like: DNSViz (dnsviz.net—visual chain validation), Verisign DNSSEC Analyzer, dig +dnssec for manual testing, and delv for DNSSEC-aware queries. Test both positive validation (correct signatures) and negative validation (NSEC/NSEC3 for non-existent records).
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