Linksys SGE2000 Cisco Small Business SFE/SGE2xxx Series Managed Switches Admin - Page 134

Configuring Device Security Defining DoS Prevention 4 STEP 3 Click Apply. The DoS prevention global settings are defined, and the device is updated. Defining Martian Addresses Martian Address Filtering enables discarding IP packets from invalid IP addresses. Martian addresses include packets from a source IP addresses outside or not used within the configured network. Martian addresses include any address within the following ranges: • 0.0.0.0/8 (Except 0.0.0.0/32 as a Source Address) - Addresses in this block refer to source hosts on this network. • 127.0.0.0/8 - Used as the Internet host loopback address. • 192.0.2.0/24 - Used as the TEST-NET in documentation and example codes. • 224.0.0.0/4 (As a Source IP Address) - Used in IPv4 Multicast address assignments, and This formerly known as Class D Address Space. • 240.0.0.0/4 (Except 255.255.255.255/32 as a Destination Address) - Reserved address range, and is formerly known as Class E Address Space. To define Martian Addresses: Cisco Small Business SFE/SGE Managed Switches Administration Guide 125