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PowerConnect B-Series FCX Configuration Guide 1211
53-1002266-01
Setting optional parameters
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To enable empty password logins, enter the following command.
PowerConnect(config)#ip ssh permit-empty-passwd yes
Syntax: ip ssh permit-empty-passwd no | yes
Setting the SSH port number
By default, SSH traffic occurs on TCP port 22. You can change this port number. For example, the
following command changes the SSH port number to 2200.
PowerConnect(config)#ip ssh port 2200
Note that if you change the default SSH port number, you must configure SSH clients to connect to
the new port. Also, you should be careful not to assign SSH to a port that is used by another
service. If you change the SSH port number, Dell recommends that you change it to a port number
greater than 1024.
Syntax: ip ssh port <number>
Setting the SSH login timeout value
When the SSH server attempts to negotiate a session key and encryption method with a connecting
client, it waits a maximum of 120 seconds for a response from the client. If there is no response
from the client after 120 seconds, the SSH server disconnects. You can change this timeout value
to between 1 – 120 seconds. For example, to change the timeout value to 60 seconds, enter the
following command.
PowerConnect(config)#ip ssh timeout 60
Syntax: ip ssh timeout <seconds>
Designating an interface as the source for all SSH packets
You can designate a loopback interface, virtual interface, or Ethernet port as the source for all SSH
packets from the device. For details, see “Configuring ARP parameters” on page 810.
Configuring the maximum idle time for SSH sessions
By default, SSH sessions do not time out. Optionally, you can set the amount of time an SSH
session can be inactive before the Dell PowerConnect device closes it. For example, to set the
maximum idle time for SSH sessions to 30 minutes, enter the following command.
PowerConnect(config)#ip ssh idle-time 30
Syntax: ip ssh idle-time <minutes>
If an established SSH session has no activity for the specified number of minutes, the Dell
PowerConnect device closes it. An idle time of 0 minutes (the default value) means that SSH
sessions never time out. The maximum idle time for SSH sessions is 240 minutes.