Basic Configuration Commands Table of Contents

4.1.6 ip sshd clear

Command description

ip sshd clear ID

Parameter

Parameter	Description
ID	Number of the SSH connection to the local device Value range: 0-65535

Default

N/A

Instruction

It is used to mandatorily close the incoming ssh connection with the specified number. You can run the command show ip sshd line to check the current incoming connection’s number.

Command mode

Global configuration mode

Example

In the following example, the No.0 incoming connection is mandatorily closed:
device_config#ip sshd clear 0

4.1.7 ip sshd silence-period

Syntax
ip sshd silence-period time-length
no ip sshd silence-period
Parameter

Parameter	Description
time-length	Means the time of the silence, which ranges from 0 to 3600.

Default value
60s
Remarks
This command is used to set the login silence period. After the accumulated login failures exceed a certain threshold, the system regards that there exist attacks and disables the SSH service in a period of time, that is, the system enters the login silence period.
The silence period is set by the ip sshd silence-period command. The default silence period is 60 seconds. The allowable login failures are set by the ip sshd auth-retries command, whose default value is 6.