How does DNS security protect against cyber threats?

DNS security helps protect against cyber threats such as spoofing and DNS hijacking by implementing various measures such as:

1. DNSSEC (Domain Name System Security Extensions): DNSSEC adds a layer of authentication and validation to the DNS system by digitally signing DNS records. This helps ensure the integrity and authenticity of the DNS data, making it harder for attackers to spoof or manipulate DNS responses.

2. DNS Filtering: DNS filtering solutions can block access to malicious websites by filtering out known malicious domains and IP addresses. This helps prevent users from unknowingly being directed to malicious sites through DNS hijacking.

3. Monitoring and Logging: Monitoring DNS traffic and logging DNS queries can help detect suspicious activities such as unusual query patterns or unexpected responses, which could indicate a DNS spoofing or hijacking attempt.

4. UDP/TCP Source Port Randomization: By randomizing the source port of DNS queries, it becomes harder for attackers to predict and intercept DNS responses, mitigating the risk of DNS hijacking.

5. Implementing DNS Firewall: DNS firewalls can block malicious domain resolutions and enforce policies to prevent unauthorized changes to DNS records, thus protecting against DNS hijacking and spoofing attacks.

By combining these and other security measures, DNS security helps to enhance the overall integrity and reliability of the DNS system, protecting against various cyber threats like spoofing and DNS hijacking.