Cisco Systems OL-16647-01 Network Router User Manual


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Cisco ASDM User Guide
OL-16647-01
Chapter 27 Configuring Advanced Firewall Protection
Configuring the Fragment Size
Fail—Display only. Displays the number of failed reassembly attempts.
Overflow—Display only. Displays the number of IP packets in the overflow queue.
Modes
The following table shows the modes in which this feature is available:
Edit Fragment
The Edit Fragment dialog box lets you configure the IP fragment database of the selected interface.
Fields
Interface—Displays the interface you selected in the Fragment panel. Changes made in the Edit
Fragment dialog box are applied to the interface displayed.
Size—Sets the maximum number of packets that can be in the IP reassembly database waiting for
reassembly.
Chain Length—Sets the maximum number of packets into which a full IP packet can be fragmented.
Timeout—Sets the maximum number of seconds to wait for an entire fragmented packet to arrive.
The timer starts after the first fragment of a packet arrives. If all fragments of the packet do not arrive
by the number of seconds specified, all fragments of the packet that were already received will be
discarded.
Restore Defaults—Restores the factory default settings:
Size is 200.
Chain is 24 packets.
Timeout is 5 seconds.
Modes
The following table shows the modes in which this feature is available:
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
• • • •
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
• • • •