Hitachi CE50-10, Instruction Manual

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5.12 Setting the security functions
You can use the following functions to safely operate the unit.
Table 5‒13: Security functions
Function name Description
Login policy This function prevents unauthorized logins.
Password policy This function defines the length, complexity, and update period of passwords.
Firewall This function closes unused ports and blocks invalid packets.
5.12.1 Setting login policies
You can specify the following settings for users who log in to the unit:
• Root account login
• Account lock for a failed login
• Login timeout
(1) Setting root account login
This function permits (enables) or rejects (disables) login with the root account. This function is disabled by default.
(a) Enabling root login
1. Set a password for the root account.
Use the
passwd
command to set the password.
$ sudo passwd
New password: <- Enter the password (the entered character string is not displayed)
.
Retype new password: <- Enter the password again (the entered character string is n
ot displayed).
passwd: password updated successfully
2. Enable login with the root account.
The following example shows how to run the command.
$ sudo passwd -u root
passwd: password expiry information changed.
3. (Optional) To enable root login via ssh, edit the SSH configuration file.
$ sudo vi /etc/ssh/sshd_config
4. (Optional) In the
sshd_config
file, change the setting of the
PermitRootLogin
option from
no
to
yes
.
PermitRootLogin no->yes
5. (Optional) After editing the SSH configuration file, you can enable the settings by running the following
command.
$ sudo systemctl restart ssh
(b) Disabling root login
Change the login with the root account from enabled to disabled.
The following shows an example of running the command.
5. Configuring Software Environment
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