The type is the protocol of the service. It is used to perform checks.
The following are available:
A web service will be HTTP or HTTPS.
A mail service will be IMAP, POP3, or SMTP.
A domain name system service will be DNS.
A generic service will be TCP or UDP.
A web service which should be tested by performing a series of tasks will be Transaction.
Note: Once you select a type, additional fields to customize the monitor may be shown.