Reference Guide

846 | Security
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ip ssh hostbased-authentication
s z
Enable hostbased-authentication for the SSHv2 server.
Syntax
ip ssh hostbased-authentication enable
To disable hostbased-authentication for SSHv2 server, use the no ip ssh hostbased-authentication
enable command.
Parameters
Defaults
Disable by default
Command Modes
CONFIGURATION
Command History
Usage Information
If this command is enabled, clients can login without a password prompt. This provides two levels of
authentication:
• rhost-authentication is done with the file specified in the ip ssh rhostfile command
• checking client host-keys is done with the file specified in the ip ssh pub-key-file command
If no ip ssh rsa-authentication enable is executed, host-based authentication is disabled.
Related
Commands
ip ssh key-size
s z
Configure the size of the server-generated RSA SSHv1 key.
Syntax
ip ssh key-size 512-869
Parameters
Defaults
Key size 768
Command Modes
CONFIGURATION
S6000
enable Enter the keyword enable to enable hostbased-authentication for SSHv2 server.
Version 9.0.2.0 Introduced on the S6000.
Version 8.3.11.1 Introduced on Z9000
Version
8.3.7.0
Introduced on the S-Series.
Note: Administrators must specify the two files (rhosts and pub-key-file) to configure
host-based authentication.
ip ssh pub-key-file Public keys of trusted hosts from a file.
ip ssh rhostsfile Trusted hosts and users for rhost authentication.
S6000
512-869
Enter the key-size number for the server-generated RSA SSHv1 key.
Range: 512 to 869
Default: 768