Dropbear (software)

For other uses, see Dropbear (disambiguation).

Dropbear

Developer(s)	Matt Johnston
Stable release	0.53.1 / March 2, 2011; 8 months ago (2011-03-02)[1]
Operating system	Cross-platform
Type	Remote access
License	MIT license
Website	matt.ucc.asn.au/dropbear/dropbear.html

Dropbear is a software package written by Matt Johnston that provides a Secure Shell-compatible server and client. It is designed for environments with low memory and processor resources, such as embedded systems.

Technology

Dropbear implements version 2 of the Secure Shell (SSH) protocol.^[2]

The cryptographic algorithms are implemented using third party cryptographic libraries included internally in the Dropbear distribution. It derives some parts from OpenSSH to handle BSD-style pseudo terminals.^[3]

Features

Dropbear implements the complete SSH version 2 protocol in both the client and the server. It does not support SSH version 1 backwards-compatibility to save space and resources, and to avoid the inherent security vulnerabilities in SSH version 1. SCP is also implemented. SFTP support relies on a binary file which can be provided by OpenSSH or similar programs.

See also

Free software portal

• OpenSSH
• Comparison of SSH clients
• Comparison of SSH servers

References

1. ^ Johnston, Matt (2011-02-24). "Dropbear 0.53". dropbear mailing list. http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2011q1/001092.html. Retrieved 2011-03-01. 
2. ^ "Ubuntu Manpage: dropbear - lightweight SSH2 server". Ubuntu.com web site. Canonical, Inc.. http://manpages.ubuntu.com/manpages/maverick/man8/dropbear.8.html. Retrieved 20 June 2011. 
3. ^ https://matt.ucc.asn.au/dropbear/dropbear.html Dropbear implementation details

External links

• Dropbear SSH web site
• Ubuntu 11.10 "Oneiric" manpage for the package "dropbear"