106 lines
6.6 KiB
Plaintext
106 lines
6.6 KiB
Plaintext
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<title>Dropbear SSH</title>
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<body>
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<div id="box">
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<p> <a id="download" href="./" title="Downloads">Download</a><br> Latest is 2020.81<br> 29 October 2020<br> <a href="releases/dropbear-2020.81.tar.bz2" title="Latest Release">dropbear‑2020.81.tar.bz2</a><br> <a href="CHANGES" title="Changelog">Changelog</a><br> <a href="https://mirror.dropbear.nl/mirror/" title="Mirror">Mirror</a><br> <br> <a href="https://hg.ucc.asn.au/dropbear/file/tip" title="Source Tree">Mercurial Source</a><span class="little"> (<a href="https://github.com/mkj/dropbear">github</a>)</span><br> <a href="https://lists.ucc.asn.au/mailman/listinfo/dropbear">Mailing List</a><br> </p>
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</div>
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<h2>Dropbear SSH</h2>
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<p> Dropbear is a relatively small <a href="https://en.wikipedia.org/wiki/Secure_Shell">SSH</a> server and client. It runs on a variety of POSIX-based platforms. Dropbear is open source software, distributed under a <a href="https://secure.ucc.asn.au/hg/dropbear/raw-file/tip/LICENSE">MIT-style license</a>. Dropbear is particularly useful for "embedded"-type Linux (or other Unix) systems, such as wireless routers.</p>
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<p>If you want to be notified of new releases, or for general discussion of Dropbear, you can subscribe to the relatively low volume <a href="https://lists.ucc.gu.uwa.edu.au/mailman/listinfo/dropbear">mailing list</a>. </p> <a name="features"></a>
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<h3>Features</h3>
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<ul>
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<li>A small memory footprint suitable for memory-constrained environments – Dropbear can compile to a <a href="http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2004q3/000022.html"> 110kB statically linked binary</a> with uClibc on x86 (only minimal options selected)</li>
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<li>Dropbear server implements X11 forwarding, and authentication-agent forwarding for <a href="http://www.openssh.org">OpenSSH</a> clients</li>
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<li>Can run from inetd or standalone</li>
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<li>Compatible with OpenSSH ~/.ssh/authorized_keys public key authentication</li>
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<li>The server, client, keygen, and key converter can be compiled into a single binary (like <a href="https://www.busybox.net">busybox</a>)</li>
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<li>Features can easily be disabled when compiling to save space</li>
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<li>Multi-hop mode uses SSH TCP forwarding to tunnel through multiple SSH hosts in a single command. <tt>dbclient <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="1f6a6c7a6d2e5f77706f2e">[email protected]</a>,<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="4d383e283f7f0d25223d7f">[email protected]</a>,destination</tt></li>
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</ul> <a name="platforms"></a>
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<h3>Platforms</h3>
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<ul>
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<li>Linux – standard distributions, <a href="https://www.uclibc.org">uClibc</a> >=0.9.17, <a href="https://www.fefe.de/dietlibc/">dietlibc</a>, <a href="https://www.musl-libc.org/">musl libc</a>, uClinux from inetd</li>
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<li>Mac OS X (compile with PAM support)</li>
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<li>FreeBSD, NetBSD and OpenBSD</li>
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<li>Solaris – tested v8 x86 and v9 Sparc</li>
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<li>IRIX 6.5 (with /dev/urandom, or prngd should work)</li>
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<li>Tru64 5.1 (using prngd for entropy)</li>
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<li>AIX 4.3.3 (with gcc and Linux Affinity Toolkit), AIX 5.2 (with /dev/urandom).</li>
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<li>HPUX 11.00 (+prngd), TCP forwarding doesn't work</li>
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<li>Cygwin – tested 1.5.19 on Windows XP</li>
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</ul>
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<p> It shouldn't be hard to get it to work on other POSIX platforms, it is mostly a case of setting up the configure and Makefile settings.</p>
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<h3>Acknowledgements</h3>
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<p> The cryptographic code utilises Tom St Denis's <a href="http://www.libtom.net/LibTomCrypt/">LibTomCrypt</a>, and uses his <a href="http://www.libtom.net/LibTomMath/">LibTomMath</a> library for the bignum parts. PTY handling code is taken from <a href="http://openssh.org/">OpenSSH</a> (from Tatu Ylönen's original ssh), login recording (utmp/wtmp) code is from OpenSSH by Andre Lucas, and some implementation details were gleaned from <a href="http://www.chiark.greenend.org.uk/~sgtatham/putty/">PuTTY</a>. Numerous people have contributed patches and bug reports, see <a href="CHANGES">CHANGES</a>. Particular thanks go to Mihnea Stoenescu for his work on the client portion. </p>
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<p>Dropbear's website is hosted by <a href="https://www.ucc.asn.au/">The University Computer Club</a> in Perth, Australia</p>
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<p> My email address is <a href="/cdn-cgi/l/email-protection#c6aba7b2e0e5f7f7f0fd86b3a5a5e8a7b5a8e8a7e0e5f7f7f1fd">matt<!--
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the quick brown fox jumps over the lazy dog-->@<b></b>ucc.asn.au</a><br> Matt Johnston </p>
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