Dell Brocade G620 Brocade 8.0.1 Fabric OS Administratiors Guide - Page 188
Allowed-user, Configuring incoming SSH authentication
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Configuring Protocols Using OpenSSH RSA, DSA, and ECDSA, the authentication protocols are based on a pair of specially generated cryptographic keys, called the private key and the public key. The advantage of using these key-based authentication systems is that in many cases, it is possible to establish secure connections without having to depend on passwords for security. RSA and ECDSA asynchronous algorithms are FIPS-compliant. Incoming authentication is used when the remote host needs to authenticate to the switch. Outgoing authentication is used when the switch needs to authenticate to a server or remote host, such as when running the configUpload or configDownload commands, or performing firmware download. Both password and public key authentication can coexist on the switch. NOTE SSH is supported only with local user accounts. Allowed-user For outgoing authentication, the default admin user must set up the allowed-user with admin permissions. By default, the admin is the configured allowed-user. While creating the key pair, the configured allowed-user can choose a passphrase with which the private key is encrypted. Then the passphrase must always be entered when authenticating to the switch. The allowed-user must have admin permissions to perform OpenSSH public key authentication, import and export keys, generate a key pair for an outgoing connection, and delete public and private keys. NOTE There are no special privileges required for the incoming allowed user. Configuring incoming SSH authentication 1. Log in to your remote host. 2. Generate a key pair for host-to-switch (incoming) authentication by verifying that SSH v2 is installed and working (refer to your host's documentation as necessary) by entering the following command: ssh-keygen -t rsa The following example generates RSA/DSA key pair. anyuser@mymachine: ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/users/anyuser/.ssh/id_rsa ): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /users/anyuser/.ssh/id_rsa. Your public key has been saved in /users/anyuser/.ssh/id_rsa.pub. The key fingerprint is: 32:9f:ae:b6:7f:7e:56:e4:b5:7a:21:f0:95:42:5c:d1 anyuser@mymachine 3. Import the public key to the switch by logging in to the switch as any user with the admin role and entering the sshUtil importpubkey command to import the key. The following example adds the public key to the switch. switch:anyuser> sshutil importpubkey Enter user name for whom key is imported: aswitchuser Enter IP address:192.168.38.244 Enter remote directory:~auser/.ssh Enter public key name(must have .pub suffix):id_rsa.pub Enter login name:auser Password: Public key is imported successfully. 4. Test the setup by logging in to the switch from a remote device, or by running a command remotely using SSH. Brocade Fabric OS Administration Guide, 8.0.1 188 53-1004111-02
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