Install Guide

Version Description
pre-6.1.1.0 Introduced on the E-Series.
Usage
Information
This command specifies the maximum number of attempts to authenticate a user on an SSH connection
with the remote host for password authentication. SSH disconnects when the number of password
failures exceeds authentication-retries.
ip ssh challenge–response–authentication
Enable challenge response authentication for SSHv2.
Syntax
ip ssh challenge-response-authentication enable
To disable the challenge response authentication, use the no ip ssh challenge-response-
authentication enable command.
Parameters
enable Enter the keyword enable to enable the challenge response authentication for
SSHv2.
Defaults Disabled.
Command Modes CONFIGURATION
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.11(0.0) Introduced on the S4810, S4820T, S3048–ON, S3100 Series, S4048–ON, S5000,
S6000, S6000–ON, Z9500, Z9100–ON, S6100–ON, S6010–ON, S4048T–ON,
C9000, and MXL.
Usage
Information
If both the challenge response authentication and password authentication methods are configured, the
challenge response authentication takes priority.
ip ssh connection-rate-limit
Configure the maximum number of incoming SSH connections per minute.
Syntax
ip ssh connection-rate-limit 1-60
Parameters
1-60 Enter the number of maximum numbers of incoming SSH connections allowed per
minute. The range is from 1 to 60 per minute. The default is 10 per minute.
Defaults 10 per minute
Command Modes CONFIGURATION
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.11(0.0) Increased the SSH rate–limit range.
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.10(0.0) Introduced on the S6100-ON.
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100-ON.
1430 Security