SV1110IPEXT Instruction Guide
23
•
Native VNC client:
There are several third-party software programs that use
the standard VNC protocol, available in open source and commercial VNC
clients.
•
SSH access:
By default, there is a standard SSH server running on port 22
(the standard SSH port). Once connected via SSH, the VNC traffic is tunneled
through the SSH connection and encrypts the VNC session. Each method will
be discussed briefly in the following section. The type of encryption method
or client used is not critical.
Web Interface
The Java-based VNC client
that is integrated into the
SV1110IPEXT’s interface
requires a browser with
cookies and JavaScript
enabled. To start the Java
VNC client, login to the
Web configuration interface
and click on the thumbnail
of the desktop on the
Home
menu, or follow one of the
two links on that page:
Java VNC with no
encryption (faster).
Java VNC with SSL encryption (more secure).
You may need to upgrade your Java support in your browser; however, most modern
browsers come with a version of Java that is compatible with this application.
The Java VNC client makes a connection back to the KVM control over IP module over
port 5900 (by default) or 15900, if encrypted. The encrypted connection is a standard
SSL (Secure Socket Layer) encrypted link that encrypts all data from the session,
including the actual video pictures.
Because Java is considered a “safe” programming language, the Java VNC client has
some limitations. Certain special keystrokes cannot be sent, such as “
Scroll Lock
” on
the keyboard.
This client software requires the use of Java 2 (JRE 1.4) to enable features like wheel
mouse support. Sun Microsystems’s Java site, www.java.com, is an excellent resource to
ensure your browser and operating system is up-to-date.
Native VNC Client
This system implements the VNC protocol, so any off the shelf VNC client can be used.
There are over 17 different VNC clients available and they should all work with this
system. This system automatically detects and makes use of certain extensions to the
basic RFB protocol that is provided by the better VNC clients.