Best FortiGuard DNS Filtering Service Alternatives in 2026
Taken from Intrusion Detection and Prevention Software, where FortiGuard DNS Filtering Service is listed too, in the same order.
- 1 8.7 Club score
Wazuh
Wazuh combines XDR and SIEM to analyze security data from endpoints, clouds, and networks for threat detection, incident response, and compliance work.
- Free plan
- Open source
- Windows · macOS · Linux · Web
- 2
8.3 Club scoreCrowdSec
CrowdSec is an open-source security stack that detects and blocks malicious IPs to help protect infrastructure and applications.
- Free plan
- Windows · macOS · Linux · Web
- 3
8.2 Club scoreSELKS
SELKS is a free, open-source implementation built around Suricata for network intrusion detection and prevention, security monitoring, and threat hunting.
- Free plan
- Open source
- Windows · Linux · Web · Self-hosted
- 4
8.2 Club scoreIPFire
IPFire is an open-source firewall and security platform for networks from home offices to global enterprises.
- Free plan
- Open source
- Linux · Web · API · Self-hosted
- 5
8.1 Club scoreAzure Monitor
- Free plan
- Windows · macOS · Linux · Web
- 6
8.1 Club scoreOSSEC
OSSEC is a scalable, multi-platform, open-source host-based intrusion detection system for monitoring systems and network components.
- Free plan
- Open source
- Windows · macOS · Linux · API
- 7 8.1 Club score
WatchGuard FireCloud
WatchGuard FireCloud is a managed, cloud-based firewall service that protects remote users from internet security threats.
- Free trial
- Windows · macOS · Web · iPhone and iPad
- 8 7.8 Club score
Atomic OSSEC
Atomic OSSEC is an endpoint detection and response system that also protects cloud workloads and APIs.
- Free trial
- Windows · macOS · Linux · Web
- 9 7.7 Club score
pfSense
pfSense is a free, open-source firewall and router distribution based on FreeBSD, managed through a web interface.
- Free plan
- Linux · Web · Self-hosted
- 10
7.6 Club scoreSuricata
Suricata is free, open-source software for network analysis, intrusion detection and prevention, and security monitoring.
- Free plan
- Windows · macOS · Linux
- 11 7.6 Club score
Arista NG Firewall
Arista NG Firewall is a hybrid network security platform with firewall, intrusion prevention, web filtering, VPN, reporting and other software packages.
- Free plan
- Web
- 12
7.5 Club scoreOPNsense
OPNsense is an open-source firewall and routing platform built on FreeBSD.
- Free plan
- Web · API · Self-hosted
- 13 7.1 Club score
Snort
Snort analyzes network traffic against rules to identify malicious activity, raise alerts, and optionally block matching packets inline.
- Free plan
- Linux · Self-hosted
- 14 7.0 Club score
Sophos Central Firewall Management
Sophos Central Firewall Management provides a cloud console for coordinating Sophos firewalls and related protection products.
- Free trial
- Web · API · Self-hosted
- 15 6.9 Club score
Stormshield Management Center
Stormshield Management Center (SMC) centralizes administration for multi-site networks that use SNS firewalls.
- Free trial
- Linux · Web · API · Self-hosted
- 16 6.9 Club score
RdpGuard
- Free trial
- Windows
- 17 6.9 Club score
Securepoint RC1000R G6
- Windows · Web · iPhone and iPad · Android
- 18 6.7 Club score
scanlogd
scanlogd is a free TCP port scan detection tool for Linux and self-hosted environments.
- Free plan
- Linux · Self-hosted
- 19
6.7 Club scoreForcepoint Next Generation Firewall
Forcepoint Next Generation Firewall provides network security and SD-WAN connectivity for enterprise networks across physical, virtual, and cloud deployments.
- Windows · macOS · Linux · Android
- 20 6.6 Club score
Clear NDR - Enterprise
- Linux · Web · API · Self-hosted