Model 9289
Spectracom Corporation
NetClock/NTP Network Time Provider Instruction Manual
3-74
3.4.15.3 Recommended SSH Client Tools
Spectracom does not make specific recommendations as to which specific SSH client, SCP
client, or SFTP client tools. However, there are many SSH based tools available at cost or free
to the user.
Two good, free examples of SSH tool suites are the command line based OpenSSH running on
a Linux or OpenBSD x86 platform and the excellent (and free) putty SSH tool suite.
The OpenSSH tool suite in source code form is freely available at
www.openSSH.org
though
you must also provide an OpenSSL library, which can be found at
www.openssl.org
.
The putty SSH tools and instructions regarding their use can be found at:
HTTP://www.chiark.greenend.org.uk/~sgtatham/putty/
3.4.15.4 Configuring
HTTPS
The OpenSSL library provides the encryption algorithms used for secure HTTP (HTTPS)
(Figure 3-68). The OpenSSL package also provides tools and software, which is used to create
x509 Certificate Requests, Self Signed Certificates and Private/Public Keys. The NetClock uses
OpenSSL library with a simple GUI interface to create certificate Requests and self-signed
certificates. Users can then send these certificate requests to an external Certificate Authority
(CA) for the creation of a third party verifiable certificate or use an internal corporate CA. If a
Certificate Authority is not available the user can simply use the self-signed certificate that
comes with the unit until it expires or create their own self-signed certificates to allow the use of
HTTPS.
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