LetsMonitor.org provides free HTTPS and certificate expiration/validation monitors with escalating alerts. We have added more monitor types, focused on website threats and performance:
Botnet/Malicious User Detection - This monitors suspicious or fraudulent users and alerts you when the user quality score drops below a threshold.
Domain Blocklist - Whether your site is on a domain blocklist.
Email Blocklist - Whether your email server has been blocklisted.
Google Safe Browsing - Checks if your site has been flagged by the Google Safe Browsing service for hosting malware or being a phishing site.
DNS Expected Values - Makes sure your DNS values are what you expect them to be.
Open Port Scan - Checks if any system ports on a host are open when they should not be.
Real User Performance - Monitors global load times and satisfaction levels from real users.
TCP Port - The TCP Port monitor checks if a server is accepting TCP connection requests on a specific I.P. address port.
The new monitors seem focused on security. I really appreciate what you’ve provided for certificate monitoring, but this seems like a different direction. Are you going to continue enhancing the certificate monitoring? In my case, I’d still like to see custom cipher sets.
Interesting similarities with things like Qualys SSL Labs, yet looking for subtly different items. I think these services can be very valuable, not just to see when something changes, but to help people understand what’s wrong with their sites when they break – sometimes for reasons whose existence they weren’t aware of.
Exactly. One of the motivations for building this is that I had a site that scored an F on Qualys and didn’t know about for who knows how long. Having monitors on your certs/sites is critical these days.