3Com Switch 7754, Configuration Manual

Page: 778 / 940

778 C
HAPTER
71: SSH T
ERMINAL
S
ERVICES
SSH Client Configuration Configuration prerequisites
Make sure that the SSH server is configured. Refer to “SSH Server Configuration”
on page 774 for configuration details.
Configure the device as an SSH client
When a device operating as an SSH client connects to the server, you can specify
whether the SSH client performs first-time authentication for the SSH server to be
accessed.
■
With first-time authentication enabled, when the SSH client accesses the SSH
server for the first time, the user can continue to access the SSH server and the
host public key will be saved on the client even if the server host public key is
not configured on the client. When the SSH client accesses the SSH server next
time, the SSH client uses the host public key saved on it to authenticate the
SSH server.
■
With first-time authentication disabled, the SSH client cannot access the SSH
server if the server host public key is not configured on the client. Before
configuring a device as an SSH client, you need to configure the host public key
of the server to be accessed on the local device and specify the name of the
host public key file of the server to be accessed. Thus, the SSH client can
authenticate the SSH server to be accessed.
Enter public key edit view public-key-code begin You can key in a blank space
between characters, since the
system can remove the blank
space automatically. But the
public key should be
composed of hexadecimal
characters.
Return to public key view
from public key edit view public-key-code end The system saves public key
data when exiting from public
key edit view
Return to system view from
public key view peer-public-key end -
Allocate public keys to SSH
users ssh user username assign
rsa-key keyname
Required
Keyname is the name of an
existing public key. If the user
already has a public key, the
new public key overrides the
old one.
Table 615 Import the RSA public key of an SSH user from the public key file
Operation Command Description
Enter system view system-view -
Import the RSA public key of
an SSH user from the public
key file rsa peer-public-key
keyname import sshkey
filename
Required
Table 614 Configure client public keys
Operation Command Description