Configuring Security
Denial of Service Prevention
Cisco Small Business 300 Series Managed Switch Administration Guide 231
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STEP 2 Click Add. The Add IP Fragments Filtering Page displays.
STEP 3 Enter the parameters.
• Interface—Select the interface on which the IP fragmentation is being
defined.
• IP Address—Enter an IP network from which the fragmented IP packets is
filtered or select All to block IP fragmented packets from all addresses. If you
enter the IP address, enter either the mask or prefix length.
• Network Mask—Select the format for the subnet mask for the source IP
address, and enter a value in one of the field:
- Mask—Select the subnet to which the source IP address belongs and
enter the subnet mask in dotted decimal format.
- Prefix Length—Select the Prefix Length and enter the number of bits that
comprise the source IP address prefix.
STEP 4 Click Apply. The IP fragmentation is defined, and the switch is updated.
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