Delan Azabani

Network protocol checking tools

I've seen several quick, web-based configuration testing tools for clients and servers of various protocols, so it could potentially be helpful to someone if I compiled a list of them here. These tools test not only that your servers are working, but that they are configured in accordance with best practices, and I use them all heavily. Let's start with TLS, DNS and SMTP, though I'll try to find more in future and append them here.

DNS — server

SMTP — server

TLS — server

TLS — client