What Are the Differences Between Secure64's DNS Security Products?

Updated

Secure64's product line splits into two groups: protective DNS and filtering (LineGuard, LineGuard Edge, Vizion, DNS Guard) and core DDI/DNS infrastructure (DNS Cache, DNS Authority, DNS Signer, DNS Manager, DNS Proxy). If your goal is to block malicious domains before users reach them, you want the first group. If your goal is to run, sign, or manage authoritative and recursive DNS yourself, you want the second. Many organizations end up using both, since the Guard products sit in front of the same DNS infrastructure the other products provide.

The company describes itself as a DDI (DNS, DHCP, IP address management) solutions expert with 20 years of DNS experience, supporting more than 1.5 billion users globally, and states it has achieved Protective DNS status as recognized by the U.S. Government. It also says deployments can be cloud or on-premises. Pricing is described as "predictable," but no specific prices or plan tiers are published on the page reviewed here.

Protective DNS and content filtering products

These products analyze domain queries in real time to detect and stop malicious activity, protect users from mistyped URLs, and block access to harmful domains.

Product What it does (per Secure64) Typical fit
LineGuard Cyberthreat protection and content filtering Organizations that need both threat blocking and content policy enforcement
LineGuard Edge Edge variant of LineGuard Distributed or edge deployments where filtering should happen close to users
Vizion Listed alongside LineGuard in the product line Teams evaluating the LineGuard family for visibility/filtering needs
DNS Guard Protective DNS that blocks threats before they reach users Core PDNS use case: stopping malicious domains at the DNS layer

Secure64 states its Guard solutions safeguard billions of users, devices, and systems daily, including computers, servers, and IoT infrastructure. The U.S. CISA and NSA maintain a list of protective DNS (pDNS) vendors, which is the reference point to check when validating whether a given vendor meets government-recognized PDNS criteria.

Choose from this group if: your priority is blocking phishing, malware, and unwanted content before a connection is made, and you want that layer applied to all devices on your network without installing agents on each one.

Core DNS and DDI infrastructure products

These are the building blocks for running DNS itself rather than filtering it.

  • DNS Cache — recursive/caching resolver function.
  • DNS Authority — authoritative name server function.
  • DNS Signer — DNSSEC signing.
  • DNS Manager — management layer for DNS operations.
  • DNS Proxy — proxying DNS traffic.

Secure64 groups these under solutions such as building a secure DNS, DDI solutions, security services through the DNS, virtualizing the DNS, migrating to ENUM, deploying DNSSEC, defending against DDoS attacks, and transitioning to IPv6.

Choose from this group if: you operate your own DNS, need DNSSEC signing, are migrating to IPv6 or ENUM, or need to harden DNS against DDoS. These are infrastructure decisions driven by your DNS architecture, not by end-user filtering policy.

How to decide

  1. Define the job first. Filtering/threat blocking → LineGuard family or DNS Guard. Running or signing DNS → DNS Cache, Authority, Signer, Manager, Proxy.
  2. Check deployment constraints. Secure64 states cloud and on-premises are both supported; confirm which applies to the specific product you need.
  3. Confirm the compliance angle if it matters. If you need government-recognized protective DNS, verify current status against the CISA/NSA pDNS vendor list rather than relying on any single vendor page.
  4. Ask about pricing directly. The site references predictable pricing but publishes no rates, so cost comparison requires contacting Secure64 or a partner.

Common sticking points

  • Overlap between LineGuard and DNS Guard. Both address threat protection; the distinction is in scope (content filtering vs. protective DNS blocking). Clarify with Secure64 which one matches your policy requirements before assuming they're interchangeable.
  • PDNS is not a substitute for endpoint security. Protective DNS blocks resolution of malicious domains; it does not inspect files or stop threats that never touch DNS.
  • "Recognized by the U.S. Government" needs a date check. Vendor recognition status can change, so verify against the current CISA/NSA list.

For a side-by-side shortlist, start with DNS Guard if you only need threat blocking, LineGuard if you also need content filtering, and the DNS Cache/Authority/Signer/Manager/Proxy set if your requirement is operating DNS infrastructure itself.