Interfaces; Ethernet; Ethernet Interfaces - D-Link DFL-1600 User Manual

9

Interfaces

Physical interfaces are the doorways of the network connections. It allows
the network traffic to enter into or go out of the network areas with which
it connects. In order to control the traffic on both in and out directions and
protect the local network, security rules in the firewall is bound to all
relevant interfaces.
9.1

Ethernet

Ethernet is one of the Local Area Network (LAN) architectures served as
the basis for the IEEE 802.3 standard, which specifies the physical and
lower software layers. It is one of the most widely implemented LAN
standards. This section presents the concepts of Ethernet interface. Some
of the commonly used protocols that run on Ethernet are introduced in
sections 9.2 VLAN and 9.4 PPPoE in this chapter, others like IPsec, PPTP,
L2TP, and ARP are covered later in the document.
9.1.1

Ethernet Interfaces

An Ethernet interface represents a physical Ethernet adapter used in the
firewall. The configuration of an Ethernet interface involves the assignment
of an IP address and other parameters, to make the interface accessible to
the network layer.
When installing a D-Link firewall, all supported Ethernet adapters in the
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