Reference Guide

Configuring outgoing SSH authentication
After the allowed-user is configured, the remaining setup steps must be completed by the allowed-user.
Use the following procedure to configure outgoing SSH authentication.
1. Log in to the switch as the default admin.
2. Change the allowed-user’s permissions to admin, if applicable.
switch:admin> userconfig --change username -r admin
The
username variable is the name of the user who can perform SSH public key authentication, and who can import, export,
and delete keys.
3. Set up the allowed-user by typing the following command:
switch:admin> sshutil allowuser username
The username variable is the name of the user who can perform SSH public key authentication, and who can import, export,
and delete keys.
4. Generate a key pair for switch-to-host (outgoing) authentication by logging in to the switch as the allowed-user and entering the
sshUtil genkey command.
You may enter a passphrase for additional security.
Example of generating a key pair on the switch
switch:alloweduser> sshutil genkey
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Key pair generated successfully.
5. Export the public key to the host by logging in to the switch as the allowed-user and entering the sshUtil exportpubkey
command to export the key.
Example of exporting a public key from the switch
switch:alloweduser> sshutil exportpubkey
Enter IP address:192.168.38.244
Enter remote directory:~auser/.ssh
Enter login name:auser
Password:
public key out_going.pub is exported successfully.
6. Append the public key to a remote host by logging in to the remote host, locating the directory where authorized keys are
stored, and appending the public key to the file.
You may need to refer to the host’s documentation to locate where the authorized keys are stored.
7. Test the setup by using a command that uses SCP and authentication, such as firmwareDownload or configUpload.
Deleting public keys on the switch
Use the following procedure to delete public keys from the switch.
1. Connect to the switch and log in using an account with admin permissions.
2. Use the sshUtil delpubkeys command to delete public keys.
Configuring Protocols
Brocade Fabric OS Administration Guide, 8.0.1
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