Networking #
- MxToolBox Subnet Calculator - best online subnet calculator I’ve used
- Netbox - source of truth for network automation
Security #
- MxToolBox - check MX, SPF, DKIM, DMARC, and much more
- Security Headers - check HTTP response headers for a site
- Qualys SSL Labs - in-depth analysis of the TLS cert/cert chain
- Certificate Search - perform searches for certs issued to a domain
HomeLab #
- Traefik - open source reverse proxy
- Pi-hole - network ad blocker
- Christian Lempa
- Techno Tim
- Jeff Geerling