Dropbear is a relatively small SSH 2 server and client. It runs on a variety of POSIX-based platforms.
Free
Open Source
Mac OS X
Linux
BSD
Cygwin
dropbear is a relatively small ssh 2 server and client. it runs on a variety of posixbased platforms. features: a small memory footprint suitable for memoryconstrained environments dropbear can compile to a 110kb statically linked binary with uclibc on x86 (only minimal options selected).dropbear server implements x11 forwarding, and authenticationagent forwarding for openssh clientscan run from inetd or standalone.compatible with openssh ~/.ssh/authorized_keys public key authentication.the server, client, keygen, and key converter can be compiled into a single binary (à la busybox).features can easily be disabled when compiling to save space.tcp forwarding support
Links to official Dropbear SSH Server and Client sites
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