Dnsvalidator is a networking tool that maintains a list of IPv4 DNS servers. It does this by verifying them against baseline servers and ensuring accurate responses.
DNSx is a DNS toolkit that allows users to run multiple DNS queries. It’s a Go language-based tool that uses a retryabledns library to run multiple probes. DNSx supports multiple DNS queries, user-supplied resolvers, and DNS wildcard filtering
Dockpot is a high interaction ssh-honeypot based on docker. It’ basically a NAT device that has the ability to act as an ssh proxy between the attacker and the honeypot (docker container in that case) and logs the attacker’s activities
ElastAlert is an open-source framework for alerting and monitoring data in Elasticsearch, enhancing real-time monitoring and alerting in various use cases.