User guide

276 DSView Installer/User Guide
Security Property
A fully functional SSH2 (Secure Shell Version 2) Client is built into the Telnet/SSH applet. The
SSH2 Client is Java-based and provides a secure method for accessing target devices.
The Telnet/SSH applet provides the following security features:
• Strict host key checking
• Support ciphers for AES (128-, 192-, 256-bit), Blowfish, Twofish, Cast, 3DES and Arcfour
• Diffie-Hellman key exchange support
• SSH-RSA key types
• Supported for hmac-md5, hmac-sha1, hmac-sha1-96, hmac-md5-96 and hmac-ripemd160
The DSView software will determine whether to create a Telnet or SSH2 connection when you
start a session with a CPS or generic appliance. A serial connection provides SSH2 serial access to
the target device from the CPS appliance. Terminal emulation options are supported using both
types of connections.
The SSH2 Client is started when you initiate a session with a CPS appliance port from the DSView
3.0 Explorer. The DSView Server is contacted, which in turn contacts the target device connected
to the CPS appliance port and exchanges X.509 certificates with the target device. The target
device also supplies a session certificate, private key and CPS appliance certificate.
These certificates are then passed back to the SSH2 Client, which uses them to determine the SSH2
host key and the DSView user SSH2 key. The Telnet/SSH applet will then establish a session with
the target device (or through the proxy server if there is a proxy server connection). The Telnet/
SSH applet then passes the RSA public key from the session certificate when establishing the SSH
connection. Finally, the Virtual Terminal window will open using an SSH2 Shell over
SSH connection.
SSH2 settings may be viewed by clicking on a CPS appliance name in the DSView 3.0 Explorer
and selecting Appliance Settings - Sessions - Settings in the side navigation bar to display the
Properties - Sessions - Settings window.
Icon Description
Paste - Pastes the contents of the system clipboard into a DSView software Telnet/SSH
applet session
Print a screen of Telnet/SSH applet session data or, if History mode is enabled, a screen of Telnet/
SSH applet session history data
Table 7.2: Telnet/SSH Applet Window Toolbar Icons (Continued)