NoMachine NX - Support: Article


Added on:	2010-09-25

Last Modified:	2012-01-30

Applies to:	NX Technology

The README file for the NoMachine OpenSSH Win32 Port

openssh-5.9p1-win32

- Updated to OpenSSH version 5.9p1.

- The openSSH SFTP client has been ported to Win 32.

openssh-4.7p1-win32-1

- The following tools have been ported to Win32: ssh-agent, ssh-add,
sftp-server program and ssh-keygen. All the basic functionalities
related to the creation of the key-pairs are fully supported. The
managing of the known_hosts file is missing.

- Added support to SSH client for MIT Kerberos for Windows and for
authorization based on smartcard devices.

- Updated SSH server to support login also when the account doesn't
have administrative privileges.

- Added support for native RSA/DSA key authorization via nxlsa, a new
NX tool. Installing this tool requires administrative privileges and
a reboot of the machine.

- The ProxyCommand option is now supported on Win32.

- Added support for installing SSHD as a service by means of sc.exe
command line tool for Windows. Since command line parameters are not
passed to the SSHD process, a default sshd_config file is searched
in the following locations: in the installation directory where
sshd.exe is located (e.g. C:\sshd); the directory 'etc' under
the installation directory (e.g. C:\sshd\etc), and the directory 'etc'
in the installation directory (e.g C:\etc).

- Improved SSH server to be fully operative on Windows Vista. SSHD can
work on Windows XP without SP1.

- Improved logging facilities of SSHD: now all instances of the SSH
server log to the same file and SSHD creates a minidump file if a
crash occurs.

- Solved problem with processes that may be left running when the SSHD
service is stopped or after an abnormal closure of the SSH session.

- Fixed some memory leaks.

- Fixed possible crashes of SSHD when a great number of connections is
established.

- Fixed possible hanging of the SSHD service that may occurr when the
SSH session is closing and when reading a passphrase.

- Fixed logging behavior of SSH client. Now when the client is run in
debug mode, output of packet dumps can be redirected to a file.
Solved other issues occurring when packet dumps when standard error
is redirected.

- Fixed a problem related to the inheritance of handles in SSHD.

- Fixed a bug in the session_get() function causing a segmentation
fault of SSHD.

- Fixed the closure of startup pipes. This solves a problem which was
limiting the number of sessions to 10.

- Fixed a problem causing a delay in establishing the connection when
SSHD is started as a Win32 service. Speeded-up login.

- Disabled the privilege separation on Win32.

- Solved issues preventing the correct detection of home directory
either on Windows 7 and when the user domain is set to NULL.

- Fixed a segmentation fault of SSHD on Windows 7 at 64bit.

- Added the setting of the USERPROFILE variable to the value detected
just after a successful login.

openssh-5.4p1-win32

- Updated to OpenSSH version 5.4p1.

openssh-4.7p1-win32

- Added the Win32 compat layer.

- The Win32 layer provides support for: User identity and password
management functions like getuid(),setuid(),getpw*() and others;
string management functions like strcasecmp(), strncasecmp() and
other functions such as gettimeofday() and gethomedir(); management
of file descriptors, file handlers and sockets in an unified way;
file descriptor and sockets functions such as fstat(), fdopen(),
open(), dup(),dup2(), pipe(),create(),shutdown(),accept(),read(),
write(),close(), socket(), setsockopt(),getsockopt(), getpeername(),
getsockname(), ioctlsocket(), listen(),bind(),connect(), and others;
the select() function which can work on sockets, files, pipes and
console handlers; Windows users authentication.

- Introduced some changes to the OpenSSH code for: supporting the
CreateProcess() function replacing fork() and allowing compilation
on Win32 platform.

- Open Issues: SSHD cannot be installed as a Windows service by means
of Win32 administrative tools; if SSHD is running as a Windows
service, it requires that property 'Allow service to interact with
desktop' is set; to allow the connecting user to be authenticated by
SSHD, it is necessary that the user belongs to the 'Administrators'
group; if the connecting user has been authorized with public key
authentication, the GetUserName() function always returns 'SYSTEM'
instead of the username; possible crashes may occur during autho-
rization phase when SSHD is running on Vista; port of the ssh-keygen
tool is not available in this version.