D-Link DFL-2500 - Manual (Page 304)

Chapter 13. Advanced Settings
This chapter describes the configurable advanced setings for NetDefendOS. The settings are divided
up into the following categories:
Note
After an advanced setting is changed a reconfiguration must be performed in order for
the new NetDefendOS configuration to be uploaded to the D-Link Firewall and the
new value to take effect.
• IP Level Settings, page 304
• TCP Level Settings, page 307
• ICMP Level Settings, page 311
• ARP Settings, page 312
• Stateful Inspection Settings, page 314
• Connection Timeouts, page 316
• Size Limits by Protocol, page 318
• Fragmentation Settings, page 320
• Local Fragment Reassembly Settings, page 324
• DHCP Settings, page 325
• DHCPRelay Settings, page 326
• DHCPServer Settings, page 327
• IPsec Settings, page 328
• Logging Settings, page 330
• Time Synchronization Settings, page 331
• PPP Settings, page 333
• Hardware Monitor Settings, page 334
• Packet Re-assembly Settings, page 335
• Miscellaneous Settings, page 336
13.1. IP Level Settings
LogChecksumErrors
Logs occurrences of IP packets containing erroneous checksums. Normally, this is the result of the
packet being damaged during network transport. All network units, both routers and workstations,
drop IP packets that contain checksum errors. However, it is highly unlikely for an attack to be
based on illegal checksums.
Default: Enabled
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