Restricting Communication by Using Firewalls
Without proper security, unauthorized third parties can access computers and other communication devices that are
connected to a network. To prevent this unauthorized access, specify the settings for packet filter, a feature that
restricts communication to devices with specified IP addresses or MAC address.
Specifying IP Addresses for Firewall Settings(P. 152)
Specifying MAC Addresses for Firewall Settings(P. 155)
Managing the Machine