Fingerprint security gateway by the presence of HTTPS website on the MX

[fpietrosanti]

This ticket is to Fingerprint security gateway by the presence of HTTPS website on the MX because someone is accessible.

For instance comune.riodipusteria.bz.it have al MX es1.gvcc.net. that run a security gateway and on https://es1.gvcc.net/login there's this text:
<title>Login - LibraCyber ESG</title>

So from here it's possible to map LibraCyber ESG https://www.libraesva.com/it/ security gateway