From Wikipedia, the free encyclopedia
Developer(s)Niels Möller
Initial releaseSeptember 1998; 25 years ago (1998-09)[1]
Stable release
2.1[2] Edit this on Wikidata / 26 June 2013
Operating systemUnix-like
TypeNetworking, Security

lsh is a free software implementation of the Secure Shell (SSH) protocol version 2, by the GNU Project[3][4][5][6] including both server and client programs. Featuring Secure Remote Password protocol (SRP) as specified in secsh-srp[7][8] besides, public-key authentication. Kerberos is somewhat supported as well.[citation needed] Currently however for password verification only, not as a single sign-on (SSO) method.[citation needed]

lsh was started from scratch and predates OpenSSH.[9]

Karim Yaghmour concluded in 2003 that lsh was "not fit for use" in production embedded Linux systems, because of its dependencies upon other software packages that have a multiplicity of further dependencies. The lsh package requires the GNU MP library, zlib, and liboop, the latter of which in turn requires GLib, which then requires pkg-config. Yaghmour further notes that lsh suffers from cross-compilation problems that it inherits from glib. "If ... your target isn't the same architecture as your host," he states, "LSH isn't a practical choice at this time."[10]

Debian provides packages of lsh as lsh-server,[11] lsh-utils, lsh-doc and lsh-client.[12]

See also[edit]


  1. ^ "Initial release of snapshot version of lsh".
  2. ^ "LSH-2.1 release". 26 June 2013.
  3. ^ Jon Lasser (2000). Think UNIX. Que-Consumer-Other Series. Que Publishing. p. 104. ISBN 9780789723765.
  4. ^ Roderick W. Smith (2005). Linux in a Windows world. O'Reilly Media, Inc. p. 227. ISBN 9780596007584.
  5. ^ "GNU - Free Software Directory".
  6. ^ "Lsh - Free Software Directory". Retrieved 16 January 2019.
  7. ^ Moller <>, Niels (30 March 2001). "Using the SRP protocol as a key exchange method in Secure Shell". Retrieved 16 January 2019.
  8. ^ "Archived copy". Archived from the original on 2016-03-03. Retrieved 2014-02-06.{{cite web}}: CS1 maint: archived copy as title (link)
  9. ^ "Comparison of SSH servers", Wikipedia, 2020-05-30, retrieved 2020-06-02
  10. ^ Karim Yaghmour (2003). Building embedded Linux systems. O'Reilly Media, Inc. p. 300. ISBN 9780596002220.
  11. ^ "Debian -- Package Search Results -- lsh-server". Retrieved 16 January 2019.
  12. ^ "Debian -- Error". Retrieved 16 January 2019.

External links[edit]