Users Guide

Version Description
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
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 cipher
Configure the list of ciphers supported on both SSH client and SCP.
Syntax
ip ssh cipher cipher-list
Parameters
cipher cipher-list Enter the keyword cipher and then a space-delimited list of ciphers that the SSH
client supports. The following ciphers are available.
● aes256-ctr
● aes256-cbc
● aes192-ctr
● aes192-cbc
● aes128-ctr
● aes128-cbc
● 3des-cbc
Defaults The default list of ciphers is in the order as shown below:
● aes256-ctr
● aes256-cbc
● aes192-ctr
● aes192-cbc
● aes128-ctr
● aes128-cbc
● 3des-cbc
Command Modes CONFIGURATION
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
Version Description
9.10(0.0) Introduced on the S6100–ON, S6000, S6000–ON, S5000, S4810, S4820T, S3048–
ON, S4048–ON, MXL, C9010, S3100 series, and Z9100-ON.
Usage
Information
● You can select one or more ciphers from the list.
● The default list of supported ciphers is same irrespective of whether FIPS mode is enabled or disabled.
● Client-supported cipher list gets preference over the server-supported cipher list in selecting the
cipher for the SSH session.
● When the cipher (-c) option is used with the SSH CLI, it overrides the configured or default
cipher list.
● When FIPS is enabled or disabled, the client ciphers get default configuration.
1248 Security