If you’re on a shielded network which only allows HTTP connections to the internet and you need to connect to a SSH destination, proxytunnel can be a useful tool.
Debian: Unlock LUKS root partition remotely by SSH using dropbear
Scenario How To This tutorial describes an option to unlock your system remotely using SSH and dropbear.
Debian: Unlock LUKS root device on LVM by an USB key
Scenario You want to unlock a system remotely during boot process. Your root partition is a LVM volume. Your LVM setup is fully encrypted with LUKS. You’re running Debian on the remote system. How To If your Linux is running on a disk with LUKS encryption and you’re annoyed to enter a passphrase by keyboard