[Access Control] IPv4 Host Access Restrictions

(1) [Apply Host Access Restrictions] - Set IPv4 host access restrictions to [Disable] or [Enable].
(2) [Default Policy] - If IPv4 host access restrictions are applied, select [Authorize Access] or [Prohibit Access] for the default policy.
(3) [Network Address / Subnet] - Create a list of permitted hosts and restricted hosts and set IPv4 address access for each host to [Yes] or [No]. You can specify the subnet and set access restrictions by network or host. If access is prohibited, access to all ports is restricted.
Important
To prohibit access via a proxy server in HTTP connection, a proxy server address must be set.
If host access restriction is set mistakenly, access to the setting pages themselves may be prohibited, in which case restoring the factory default settings will become the only means for recovery.