D-Link xStack DGS-3426P, User Manual

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xStack DGS-3400 Series Layer 2 Gigabit Ethernet Managed Switch
Secure Shell (SSH)
SSH is an abbreviation of Secure Shell , which is a program allowing secure remote login and secure network services over an
insecure network. It allows a secure login to remote host computers, a safe method of executing commands on a remote end node,
and will provide secure encrypted and authenticated communication between two non-trusted hosts. SSH, with its array of
unmatched security features is an essential tool in today’s networking environment. It is a powerful guardian against numerous
existing security hazards that now threaten network communications.
The steps required to use the SSH protocol for secure communication between a remote PC (the SSH client) and the Switch (the
SSH server) are as follows:
1. Create a user account with admin-level access using the User Accounts window in the Security Management folder.
This is identical to creating any other admin-level User Account on the Switch, including specifying a password. This
password is used to logon to the Switch, once a secure communication path has been established using the SSH protocol.
2. Configure the User Account to use a specified authorization method to identify users that are allowed to establish SSH
connections with the Switch using the SSH User Authentication window. There are three choices as to the method SSH
will use to authorize the user, which are Host Based , Password and Public Key .
3. Configure the encryption algorithm that SSH will use to encrypt and decrypt messages sent between the SSH client and
the SSH server, using the SSH Algorithm window.
4. Finally, enable SSH on the Switch using the SSH Configuration window.
After completing the preceding steps, a SSH Client on a remote PC can be configured to manage the Switch using a secure, in
band connection.
SSH Configuration
The following window is used to configure and view settings for the SSH server and can be opened by clicking Security > SSH >
SSH Configuration :
Figure 9- 29. Current SSH Configuration and SSH Server Configuration Settings menu
To configure the SSH server on the Switch, modify the following parameters and click Apply :
Parameter Description
SSH Server Status Use the pull-down menu to enable or disable SSH on the Switch. The default is Disabled .
Max Session (1-8) Enter a value between 1 and 8 to set the number of users that may simultaneously access
the Switch. The default setting is 8.
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