Binary package “libssh2-1-dev” in ubuntu bionic

SSH2 client-side library (development headers)

 libssh2 is a client-side C library implementing the SSH2 protocol.
 It supports regular terminal, SCP and SFTP (v1-v5) sessions;
 port forwarding, X11 forwarding; password, key-based and
 keyboard-interactive authentication.
 .
 This package contains the development files.