Enabling Ssh Remote Access - D-Link DFL-1660 User Manual

2.1.4. The CLI
• A RS-232 cable with appropriate connectors. An appliance package includes a RS-232
null-modem cable.
To connect a terminal to the console port, follow these steps:
1. Set the terminal protocol as described previously.
2. Connect one of the connectors of the RS-232 cable directly to the console port on the
NetDefend Firewall system.
3. Connect the other end of the cable to the terminal or the serial connector of the computer
running the communications software.
4. Press the enter key on the terminal. The NetDefendOS login prompt should appear on the
terminal screen.
SSH (Secure Shell) CLI Access
The SSH (Secure Shell) protocol can be used to access the CLI over the network from a remote
host. SSH is a protocol primarily used for secure communication over insecure networks, providing
strong authentication and data integrity. SSH clients are freely available for almost all hardware
platforms.
NetDefendOS supports version 1, 1.5 and 2 of the SSH protocol. SSH access is regulated by the
remote management policy in NetDefendOS, and is disabled by default.
Example 2.2. Enabling SSH Remote Access
This example shows how to enable remote SSH access from the lannet network through the lan interface by
adding a rule to the remote management policy.
Command-Line Interface
gw-world:/> add RemoteManagement RemoteMgmtSSH ssh
Web Interface
1. Go to: System > Remote Management > Add > Secure Shell Management
2. Enter a Name for the SSH remote management policy, for example ssh_policy
3. Select the following from the dropdown lists:
• User Database: AdminUsers
• Interface: lan
• Network: lannet
4. Click OK
Logging on to the CLI
When access to the CLI has been established to NetDefendOS through the serial console or an SSH
client, the administrator will need to logon to the system before being able to execute any CLI
command. This authentication step is needed to ensure that only trusted users can access the system,
Network=lannet
Interface=lan
LocalUserDatabase=AdminUsers
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Chapter 2. Management and Maintenance