Article · Wikipedia archive · Last revised Jun 25, 2026

Lsh

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

Last revised
Jun 25, 2026
Read time
≈ 1 min
Length
336 w
Citations
12
Source
Wikipedia ↗
lsh
DeveloperNiels Möller
Initial releaseSeptember 1998 (1998-09)1
Stable release
2.12 Edit this on Wikidata / 26 June 2013
Operating systemUnix-like
TypeNetworking, Security
LicenseGPL-2.0-or-later
Websitewww.lysator.liu.se/~nisse/lsh/
Repository

lsh is a copyleft implementation of the Secure Shell (SSH) protocol version 2, by the GNU Project3456 including both server and client programs. Featuring Secure Remote Password protocol (SRP) as specified in secsh-srp78 besides, public-key authentication. Kerberos is somewhat supported as well. Currently however for password verification only, not as a single sign-on (SSO) method.

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

See also

References

References

  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". directory.fsf.org. Retrieved 16 January 2019.
  7. Moller <nisse@lysator.liu.se>, Niels (30 March 2001). "Using the SRP protocol as a key exchange method in Secure Shell". tools.ietf.org. 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". packages.debian.org. Retrieved 16 January 2019.
  12. "Debian -- Error". packages.debian.org. Retrieved 16 January 2019.
External links