User Manual

Using SmartDefense
224 Check Point Safe@Office User Guide
SmartDefense Categories
SmartDefense includes the following categories:
• Denial of Service on page
224
• IP and ICMP on page
229
• TCP on page
239
• Port Scan on page
242
• FTP on page
245
• Microsoft Networks on page
249
• IGMP on page
251
• Peer to Peer on page
252
• Instant Messengers on page
254
Denial of Service
Denial of Service (DoS) attacks are aimed at overwhelming the target with
spurious data, to the point where it is no longer able to respond to legitimate
service requests.
This category includes the following attacks:
• Teardrop on page
224
• Ping of Death on page 225
• LAND on page
226
• Non-TCP Flooding on page 227
Teardrop
In a Teardrop attack, the attacker sends two IP fragments, the latter entirely
contained within the former. This causes some computers to allocate too much
memory and crash.