Best Palo Alto Networks Advanced DNS Security Alternatives & Competitors in 2026

ThreatSTOP Protective DNS

DNS-layer threat blocking service with real-time threat intelligence feeds

Infoblox Threat Defense

DNS-based threat defense using predictive intelligence to block threats

Centripetal CleanINTERNET®

Real-time network threat prevention platform enforcing 10B+ threat indicators.

Wireless Airspace Cybersecurity Platform

AI-driven RF monitoring platform for wireless device detection & threat mgmt.

Trellix Intrusion Prevention System

Next-gen IPS detecting & blocking network threats via signatures & behavior

Palo Alto Networks Advanced Threat Prevention

IPS with inline AI models to block zero-day exploits and C2 attacks in real time

Trend Micro TippingPoint Threat Protection System

Inline network detection and response system with IPS capabilities

BlueCat Edge

DNS-layer security solution for threat detection and policy enforcement

Cybermerc Aushield Protect

Network security solution for SMBs with behavioral intrusion detection

OpenText Core DNS Protection

Cloud-native DNS filtering solution that blocks malicious domains and threats

threatER

Preemptive threat blocking platform using IP segmentation and DNS security.

Snort Open Source

Snort is an open-source network intrusion detection and prevention system that analyzes traffic in real-time to identify and block malicious activity using rule-based detection methods.

HYAS Protect Protective DNS

Protective DNS solution that blocks malicious domains and prevents cyber attacks

ScoutDNS Threat Protection

DNS-layer threat protection blocking malware, phishing, and DNS attacks

Backbox Network Cyber Resilience Platform

Network infrastructure automation platform for cyber resilience tasks

Akheros

Anomaly-based IDS using relative incongruity scoring to reduce false positives.

Axiom Cyber HakTrap

Hardware network security device for home/SMB with continuous threat updates.

Digital Arts Inc.

Japanese cybersecurity firm offering web/email filtering & data loss prevention.

DNSSense DNSDome

AI-based DNS security platform blocking tunneling, malware, and zero-days.

Guardian360 Hacker Alert

24/7 network intrusion detection with immediate alert notifications.

Whalebone

DNS-based cybersecurity platform for telcos, ISPs, enterprises & govts.

Intrusion Shield

Network threat protection platform blocking malicious IPs using reputation intelligence.

IDappcom TrafficIQ Professional

Windows platform for auditing network security defences via custom PCAP replay.

Trapster Community

A low-interaction honeypot that simulates network services to detect intrusion attempts

Defensia

Open-source Linux security agent with real-time dashboard: SSH, WAF, and CVE scanning

Fail2ban

Fail2ban is a daemon that automatically bans IP addresses showing malicious behavior by monitoring log files and updating firewall rules to prevent brute-force attacks.

CrowdSec Security Stack

Open source crowd-powered IDS/IPS and WAF for infra & app security.

Quad9

A free DNS recursive service that blocks malicious host names and protects user privacy.

Suricata

Suricata offers real-time intrusion detection, intrusion prevention, and network monitoring.

Bro IDS

An open-source network security monitoring tool.

CrowdSec

CrowdSec is a collaborative behavior detection engine that analyzes system logs to identify and block malicious activities using community-shared threat intelligence.

Kismet

A wireless network detector, sniffer, and intrusion detection system

SSHWATCH v2.0 Intrusion Prevention System (IPS) for Secure Shell (SSH)

An intrusion prevention system for SSH that blocks IP addresses after a set number of consecutive failed login attempts.

Vanguards Onion Service Addon

A controller addon that provides additional security defenses for onion services ahead of official Tor-core release.

6Guard (IPv6 attack detector)

6Guard is an IPv6 attack detector sponsored by Google Summer of Code 2012 and supported by The Honeynet Project organization.

Snort++

Snort 3 is the next generation Snort IPS with enhanced features and improved cross-platform support.

DenyHosts

DenyHosts is a script to block SSH server attacks by automatically preventing attackers after failed login attempts.

libnids

Libnids is an implementation of an E-component of Network Intrusion Detection System that emulates the IP stack of Linux 2.0.x and offers IP defragmentation, TCP stream assembly, and TCP port scan detection.

Haka

Open source security-oriented language for describing protocols and applying security policies on captured traffic.

SSHGuard

SSHGuard protects hosts from brute-force attacks by monitoring system logs, detecting attacks, and blocking attackers using a firewall.

BPF+: Exploiting Global Data-flow Optimization in a Generalized Packet Filter Architecture

BPF+ is a generalized packet filter framework that achieves both high-level expressiveness and good performance for network monitoring and intrusion detection applications.