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Example
Dell#ssh 123.12.1.123 -l ashwani -p 5005 -v 2
ip ssh pub-key-file
Specify the file used for host-based authentication.
Syntax
ip ssh pub-key-file {WORD}
Parameters
WORD Enter the file name for the host-based authentication.
Defaults none
Command Modes CONFIGURATION
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage
Information
This command specifies the file used for the host-based authentication. The creates/ file overwrites
the flash://ADMIN_DIR/ssh/knownhosts file and deletes the user-specified file. Even though this
command is a global configuration command, it does not appear in the running configuration because you
only need to run this command once.
The file contains the OpenSSH-compatible public keys of the host for which host-based authentication is
allowed. An example known host file format:
poclab4,123.12.1.123 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIEAox/
QQp8xYhzOxn07yh4VGPAoUfgKoieTHO9G4sNV+ui+DWEc3cgYAcU5Lai1MU2ODrzhCwyDNp05tK
BU3t
ReG1o8AxLi6+S4hyEMqHzkzBFNVqHzpQc+Rs4p2urzV0F4pRKnaXdHf3Lk4D460HZRhhVrxqeNx
PDpEn WIMPJi0ds= ashwani@poclab4
NOTE: For rhostfile and pub-key-file, the administrator must FTP the file to the chassis.
Example
Dell#conf
Dell(conf)# ip ssh pub-key-file flash://knownhosts
Dell(conf)#
Related
Commands
show ip ssh client-pub-keys — displays the client-public keys used for the host-based authentication.
Secure DHCP Commands
The dynamic host configuration protocol (DHCP) as defined by RFC 2131 provides no authentication or security mechanisms.
Secure DHCP is a suite of features that protects networks that use dynamic address allocation from spoofing and attacks.
clear ip dhcp snooping
Clear the DHCP binding table.
Syntax
clear ip dhcp snooping binding
Defaults none
Command Modes EXEC Privilege
Supported Modes Full–Switch
1060 Security