3Com SuperStack 4 Configuration Manual page 358

370 C 12: F S
HAPTER ILE
SSH Terminal Services
M
YSTEM ANAGEMENT
[switch2]ntp-service authentication enable
4 Set the key.
[switch2]ntp-service authentication-keyid 42 authentication-mode md5
aNiceKey
Set the key as reliable.
5 [switch2]ntp-service reliable authentication-keyid 42
[switch2]ntp-service unicast-server 1.0.1.11 authentication-keyid 42
The above examples synchronized Switch 2 by Switch 1. Since Switch 1 has not
been enabled authentication, it cannot synchronize Switch 2. And now let us do
the following additional configurations on Switch 1:
1 Enable authentication.
[switch1]ntp-service authentication enable
2 Set the key.
[switch1]ntp-service authentication-keyid 42 authentication-mode md5
aNiceKey
3 Configure the key as reliable.
[switch1]ntp-service reliable authentication-keyid 42
Secure Shell (SSH) can provide information security and powerful authentication to
prevent such assaults as IP address spoofing, plain-text password interception
when users log on to the Switch remotely from an insecure network environment.
A Switch can connect to multiple SSH clients. SSH Client functions to enable SSH
connections between users and the Switch or UNIX host that support SSH Server.
You can set up SSH channels for local connection. See
Currently the Switch that runs SSH server supports SSH version 1.5.
Figure 95 Setting up SSH channels in LAN
3
1: Switch running SSH server
2: PC running SSH client
3: Ethernet LAN
In the above figure, the VLAN for the Ethernet port must have been configured
with VLAN interfaces and IP address.
1
2
Figure 95.