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Best FortiGuard DNS Filtering Service Alternatives in 2026

Updated

20 apps from intrusion detection and prevention software ranked against FortiGuard DNS Filtering Service on the same published basis.

  1. 1
    Suricata Free plan LinuxMacWin Free8.1
    FortiGuard DNS Filtering Service vs Suricata
  2. 2
    Snort Free plan Linuxself-hosted $2.50/mo8.1
    FortiGuard DNS Filtering Service vs Snort
  3. 3
    CrowdSec Free plan apiextensionLinuxMacself-hosted 8.0
    FortiGuard DNS Filtering Service vs CrowdSec
  4. 4
    SELKS Free plan Linuxself-hostedWebWin Free7.9
    FortiGuard DNS Filtering Service vs SELKS
  5. 5
    OPNsense Free plan apiself-hostedWeb 7.6
    FortiGuard DNS Filtering Service vs OPNsense
  6. 6
    Securepoint RC1000R G6 WebWiniOSAndroid 7.6
    FortiGuard DNS Filtering Service vs Securepoint RC1000R G6
  7. 7
    Huawei HiSecEngine USG6800G Web 7.2
    FortiGuard DNS Filtering Service vs Huawei HiSecEngine USG6800G
  8. 8
    IPFire Free plan Linuxself-hostedWeb Free7.1
    FortiGuard DNS Filtering Service vs IPFire
  9. 9
    pfSense Free plan Linuxself-hostedWeb 7.1
    FortiGuard DNS Filtering Service vs pfSense
  10. 10
    Arista NG Firewall Free plan Web $22.50/mo7.1
    FortiGuard DNS Filtering Service vs Arista NG Firewall
  11. 11
    Zyxel Intrusion Prevention System 6.8
    FortiGuard DNS Filtering Service vs Zyxel Intrusion Prevention System
  12. 12
    FortiGate 6.8
    FortiGuard DNS Filtering Service vs FortiGate
  13. 13
    OSSEC Free plan LinuxMacself-hostedWin $5/mo6.8
    FortiGuard DNS Filtering Service vs OSSEC
  14. 14
    Wazuh Free plan apiLinuxMacself-hostedWeb $571/mo6.7
    FortiGuard DNS Filtering Service vs Wazuh
  15. 15
    AWS Network Firewall apiWeb $0.07/mo6.6
    FortiGuard DNS Filtering Service vs AWS Network Firewall
  16. 16
    Azure Firewall Premium 6.2
    FortiGuard DNS Filtering Service vs Azure Firewall Premium
  17. 17
    WatchGuard Firebox Web 6.2
    FortiGuard DNS Filtering Service vs WatchGuard Firebox
  18. 18
    Atomic OSSEC WebWinMacLinux 5.7
    FortiGuard DNS Filtering Service vs Atomic OSSEC
  19. 19
    Forcepoint Next Generation Firewall 5.4
    FortiGuard DNS Filtering Service vs Forcepoint Next Generation Firewall
  20. 20
    RdpGuard Win 5.4
    FortiGuard DNS Filtering Service vs RdpGuard

FortiGuard DNS Filtering Service alternatives compared

#AppScoreFree planFromRuns on
1Suricata8.1Free planFreeLinux, Mac, Windows
2Snort8.1Free plan$2.50/moLinux, self-hosted
3CrowdSec8.0Free plan—API, Browser, Linux, Mac, self-hosted, Web, Windows
4SELKS7.9Free planFreeLinux, self-hosted, Web, Windows
5OPNsense7.6Free plan—API, self-hosted, Web
6Securepoint RC1000R G67.6No—Web, Windows, iOS, Android
7Huawei HiSecEngine USG6800G7.2No—Web
8IPFire7.1Free planFreeLinux, self-hosted, Web
9pfSense7.1Free plan—Linux, self-hosted, Web
10Arista NG Firewall7.1Free plan$22.50/moWeb
11Zyxel Intrusion Prevention System6.8No——
12FortiGate6.8No——
13OSSEC6.8Free plan$5/moLinux, Mac, self-hosted, Windows
14Wazuh6.7Free plan$571/moAPI, Linux, Mac, self-hosted, Web, Windows
15AWS Network Firewall6.6No$0.07/moAPI, Web
16Azure Firewall Premium6.2No——
17WatchGuard Firebox6.2No—Web
18Atomic OSSEC5.7No—Web, Windows, Mac, Linux
19Forcepoint Next Generation Firewall5.4No——
20RdpGuard5.4No—Windows
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Questions about FortiGuard DNS Filtering Service alternatives

What is the best alternative to FortiGuard DNS Filtering Service?

Suricata, number 1 in intrusion detection and prevention software with a score of 8.1 out of 10. The others here: Snort, CrowdSec, SELKS and 16 more.

What is the best free alternative to FortiGuard DNS Filtering Service?

Suricata is the best-ranked alternative with a free plan. 10 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation.