Compatible Systems 5.4 manual IP Routing & Bridging Directed Broadcast, Ospf

Chapter 2 - IP Routing & Bridging 25

Directed Broadcast

This checkbox sets whether the interface will forward network-prefix-directed broadcasts. This is a security feature which can help prevent your network from being used as an intermediary in certain kinds of attacks which use ICMP echo traffic (pings) or UDP echo packets with fake (i.e., “spoofed”) source addresses to inundate a victim with erroneous traffic.

Options

The options button brings up the Ethernet TCP/IP Options Dialog Box which provides access to Proxy ARP, UDP Relays and other configuration informa- tion. This dialog box is discussed later in this chapter.

OSPF

This option button brings up the OSPF Dialog Box which allows the OSPF routing protocol to be enabled. For more information on this dialog box and other OSPF parameters, refer to Chapter 15 - OSPF.