ANNOUNCE 3.09 KB
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I'd like to announce a new version of LSH, the GNU implementation of
the secure shell protocols. LSH includes a client, a server, and a few
scripts and utility programs.

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The LSH-1.4 release, and any following LSH-1.4.x updates, are intended
to be stable. New features will be added to LSH-1.5.x.
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FEATURES

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The most notable new features in LSH-1.4 are
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o  Random numbers are generated using the Yarrow pseudorandomness
   generator, which improves security in particular on systems without
   /dev/random. A new program lsh-make-seed is provided for
   initializing the generator.
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o  Both lsh and lshd now expire session keys and performs
   key-reexchange regularly. 
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o  AES is now the default cipher. Faster assembler versions are
   included for x86 and sparc.
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o  Client and server support for subsystems.

o  lsh supports X11 forwarding; lshd support is not yet implemented.

o  Implemented handshake timeout.
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o  lshd handles SIGHUP by closing its listening socket, and then
   waiting for existing connections to be closed before exiting. This
   makes it easier to restart lshd in a friendly way.

o  Proper utmp logging.

o  Improved handling of process suspend, and other process related
   things. 


Some of the older (LSH-1.0 and LSH-1.2) features are
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o  Strong encryption and data authentication.

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o  Strong host authentication using public key techniques, DSA and RSA
   keys. 
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o  User authentication by either ordinary UN*X passwords
   or public key techniques.

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o  Spawning of remote shells and commands, including pseudo tty support.

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o  A "gateway" interface, which lets you create a single SSH connection
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   to a remote host, and reuse that connection for later commands.
   Ideal for applications like remote CVS.

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o  Forwarding of TCP connections, in both directions.

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o  Zlib compression.

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o  Limited Kerberos support, comparable to that available for the
   original sshd.

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o  Experimental support for Secure Remote Password (SRP) authentication.
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o  Experimental support for IPv6.

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o  A manual.
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COMPATIBILITY AND PORTABILITY

LSH implements the secsh protocol as defined by the latest drafts from
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the IETF secsh working group. It interoperates with both SSH Inc's
SSH2 products and OpenSSH. Note that LSH is *not* compatible with
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SSH1, although the lshd deamon can fall back to an SSH1 implementation
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(e.g. OpenSSH or SSH Inc's) when an ssh1 client connects.
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LSH is reported to have worked at least once on GNU/Linux on Sparc,
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Intel, PPC and Alpha, FreeBSD, Solaris and IRIX. There may well be
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portability problems left, please report them to me.
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QUALITY

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LSH is provided AS IS, ABSOLUTELY no GUARANTEES, etc. Please report
any bugs you find.
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COPYRIGHT
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LSH is distributed under the terms and conditions of the GNU General
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Public License. Unlike some other secsh implementations, you can use
LSH freely for any purpose.
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AVAILABILITY AND FURTHER INFORMATION

The main LSH archive is located at

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  ftp://ftp.lysator.liu.se/pub/security/lsh
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Discussions about LSH takes place on the psst mailing list. See the
psst home page, http://www.net.lut.ac.uk/psst, for details.


Happy hacking,
/Niels Möller, <nisse@lysator.liu.se>