Simple application using pam to control ssh connections. Will show confirmation dialog and notification with sound and led indication when new incoming connection estabilishing.
Contains settings (System -> Security -> SSH) with simple options.

Pam remote host value may contain hostname or ip depends on your network/ssh/dns configuration, so it's allowed to write anything to whitelist config and user responsible to control this himself.

Openrepos: https://openrepos.net/content/coderu...s-confirmation
Github: https://github.com/CODeRUS/ssh-pam-access-control