Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.
One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.
You can adjust your PuTTY settings (category Terminal -> Bell) to change how the beep works for you. I found the "default system alert sound" to be rather quiet; "Beep using the PC speaker" was a little more noticeable, but you could also set a custom sound.
To have your script do "echo ^G", you may need to type "echo <ctrl>-V<ctrl>-G".