DNS Security (DNSSEC)
What Is DNS Security?
DNS security refers to the practices and technologies used to protect the Domain Name System (DNS), which translates human-readable domain names into IP addresses, from being manipulated or exploited by attackers.
Common DNS-Based Attacks
| Attack | Description |
|---|---|
| DNS Spoofing/Cache Poisoning | Injecting false DNS records to redirect users to malicious sites |
| DNS Tunneling | Hiding data or commands within DNS queries to bypass security controls |
| DDoS on DNS Servers | Overwhelming DNS infrastructure to disrupt name resolution |
What Is DNSSEC?
DNSSEC (Domain Name System Security Extensions) adds cryptographic signatures to DNS records, allowing resolvers to verify that the response they receive is authentic and has not been tampered with in transit.
Why DNSSEC Matters
Without DNSSEC, attackers can more easily redirect users to fraudulent websites through spoofed DNS responses, making DNSSEC an important safeguard for maintaining trust in the domain name resolution process.
Securing DNS protects how devices locate resources on a network, and that protection is reinforced further by segmenting the network itself into isolated, controlled zones.
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