Dropbear SSH
matt.ucc.asn.au › dropbear › dropbearDropbear is a relatively small SSH server and client. It runs on a variety of unix platforms. Dropbear is open source software, distributed under a MIT-style license. Dropbear is particularly useful for "embedded"-type Linux (or other Unix) systems, such as wireless routers. If you want to be notified of new releases, or for general discussion ...
[OpenWrt Wiki] Dropbear configuration
openwrt.org › docs › guide-userDropbear configuration. Follow SFTP server to provide SFTP support. Follow Dropbear key-based authentication to set up key-based authentication. Follow Secure your router's access for additional security hardening. The SSH configuration is handled by the Dropbear subsystem of uci and the configuration file is located in /etc/config/dropbear .