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Developer(s) Niels Möller
Initial release September 1998; 18 years ago (1998-09)[1]
Stable release
v2.1 / June 26, 2013; 3 years ago (2013-06-26)
Operating system Unix-like
Type Networking, Security
License GPL

lsh is a free software implementation of the Secure Shell (SSH) protocol version 2, by the GNU Project[2][3][4][5] including both server and client programs. Featuring SRP as specified in secsh-srp[6] besides, public-key authentication. Kerberos is somewhat supported as well[citation needed]. Currently however for password verification only, not as an SSO method[citation needed]. secsh-srp lsh was started from scratch and predates OpenSSH, a more popular alternative[citation needed].

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."[7]

Debian provides packages of lsh as lsh-server,[8] lsh-utils, lsh-doc and lsh-client.[9]

See also[edit]


  1. ^ "Initial release of snapshot version of lsh". 
  2. ^ Jon Lasser (2000). Think UNIX. Que-Consumer-Other Series. Que Publishing. p. 104. ISBN 9780789723765. 
  3. ^ Roderick W. Smith (2005). Linux in a Windows world. O'Reilly Media, Inc. p. 227. ISBN 9780596007584. 
  4. ^
  5. ^
  6. ^
  7. ^ Karim Yaghmour (2003). Building embedded Linux systems. O'Reilly Media, Inc. p. 300. ISBN 9780596002220. 
  8. ^ Debian's official packages for lsh-server
  9. ^ Squeeze version of lsh-server

External links[edit]