Allied Telesis AT-S63 - Manual (Page 634)

Chapter 35: Secure Shell (SSH)
634 Section IX: Management Security
Configuring SSH
This section describes how to configure the switch as an SSH server.
Before you begin this procedure, you need to configure a host and server
keys for SSH. See Chapter 33, “Encryption Keys” on page 595. The
minimum bit size of the server key is 512 bits. The recommended bit size
for a server key is 768 bits. The recommended size for the host key is
1024 bits. In addition, the bit size of the host and server keys must differ
by 128 bits.
While you are configuring the SSH feature, you must disable the SSH
server. When you have completed your configuration changes, enable the
SSH server to permit SSH client connections.
Note
Allied Telesis recommends disabling the Telnet server before you
enable SSH. Otherwise, the security functions provided by SSH are
lost. See “Configuring the Telnet Server” on page 47.
To configure the SSH protocol, perform the following procedure:
1. From the Main Menu, type 7 to select Security and Services.
The Security and Services menu is shown in Figure 71 on page 220.
2. From the Security and Services menu, type 8 to select Secure Shell
(SSH).
The Secure Shell (SSH) menu is shown in Figure 236.
Figure 236. Secure Shell (SSH) Menu
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Secure Shell (SSH)
1 - SSH Server Status ....... Disabled
2 - Host Key ID.............. <Not Defined>
3 - Server Key ID ........... <Not Defined>
4 - Server Key Expiry Time .. 0 hours
5 - Login Timeout ........... 180 seconds
6 - Show Server Information
R - Return to Previous Menu
Enter your selection?