Best 6Guard (IPv6 attack detector) Alternatives & Competitors in 2026

SSHGuard

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

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

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.

Trend Micro TippingPoint Threat Protection System

Inline network detection and response system with IPS capabilities

Array ASI SSL Intercept

SSL/TLS decryption appliance for inspecting encrypted network traffic

Cybermerc Aushield Protect

Network security solution for SMBs with behavioral intrusion detection

ExtraHop IDS

IDS integrated into RevealX NDR for real-time threat detection & investigation

Hoplite Border Gateway Protocol Defense

BGP-based threat intelligence delivery for blocking malicious IPs at routers

ScoutDNS Device Protection

DNS-layer protection for devices across all network environments

AccuKnox 5G Security (5GNAPP)

5G network security platform for O-RAN/SD-RAN posture mgmt and threat detection.

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.

BitNinja Server Security

Multi-layered Linux server security agent with WAF, malware scan, and IP filtering.

Corsa NSE7000 Security Services Load Balancer

Hardware appliance for SSL/TLS inspection scaling via security service load balancing.

GeoEdge Zero Trust Link Guard

Real-time URL scanning tool that detects malicious links and bypasses evasion tactics.

Guardian360 Hacker Alert

24/7 network intrusion detection with immediate alert notifications.

MetaFlows

Network security monitoring platform with IDS, PCAP capture, and asset discovery.

MeerCAT-Pro

GIS-based visual analytics tool for wireless security risk assessment.

Whalebone

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

Wireless Airspace Cybersecurity Platform

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

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.

wireshark

A free, open-source network protocol analyzer for capturing and displaying packet-level data.

Quad9

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

OSSEC

OSSEC is a versatile HIDS known for its powerful log analysis and intrusion detection capabilities.

Suricata

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

SentryPeer

SentryPeer is a fraud detection tool that monitors and detects fraudulent activities on SIP servers, capturing IP addresses and phone numbers of suspicious activities and providing a notification system to service providers.

SIREN Setup Instructions

Instructions for setting up SIREN, including downloading Linux dependencies, cloning the repository, setting up virtual environment, installing pip requirements, running SIREN, setting up Snort on Pi, and MySQL setup.

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

sniffglue

Sniffglue is a network sniffer tool written in Rust with advanced filter sensitivity options and secure packet processing.

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.

Snort++

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

YAIDS

A multi-threaded intrusion detection system using Yara for network and stream IDS

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.

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.

BotScout.com

BotScout.com provides proactive bot detection, screening, and banning through a powerful API.