Now a days you want to verify if a DNS zone is secure and verified correctly with DNS sec. This is how you do it on a Netscaler if you ever wondered :-).
Configuring server-side SNI support (needed for Microsoft ADFS)
FortiWeb supports server-side SNI (Server Name Indication). You use this feature when you have the following configuration requirements:
The operating mode is reverse proxy or true transparent proxy.
You offload SSL/TLS processing to FortiWeb and use SSL/TLS for connections between FortiWeb and the pool member (end-to-end encryption).
One or more server pool members require SNI support.
On most of the newly installed windows server the telnet client is not enabled.
If you want to test if a remote port is open you can use a powershell command: