User's Manual Part 2

Using SmartDefense
244 Check Point Safe@Office User Guide
In this field… Do this…
Minimal MTU
Size
Type the minimum value allowed for the MTU field in IP packets sent by a
client.
An overly small value will not prevent an attack, while an overly large value
might degrade performance and cause legitimate requests to be dropped.
The default value is 300.
Port Scan
An attacker can perform a port scan to determine whether ports are open and
vulnerable to an attack. This is most commonly done by attempting to access a port
and waiting for a response. The response indicates whether or not the port is open.
This category includes the following types of port scans:
• Host Port Scan. The attacker scans a specific host's ports to determine
which of the ports are open.
• Sweep Scan. The attacker scans various hosts to determine where a specific
port is open.
You can configure how the Safe@Office appliance should react when a port scan is
detected.