User's Manual Part 2

Configuring VStream Antivirus

280 Check Point Safe@Office User Guide

In this field… Do this…

Maximum compression

ratio 1:x

Fill in the field to complete the maximum compression ratio of

files that VStream Antivirus should scan.

For example, to specify a 1:150 maximum compression ratio,

type 150.

Setting a higher number allows the scanning of highly

compressed files, but creates a potential for highly compressible

files to create a heavy load on the appliance. Setting a lower

number prevents attackers from overloading the gateway by

sending extremely compressible files.

The default value is 100.

When archived file

exceeds limit or extraction

fails

Specify how VStream Antivirus should handle files that exceed

the Maximum nesting level or the Maximum compression ratio, and

files for which scanning fails. Select one of the following:

• Pass file without scanning. Scan only the number of

levels specified, and skip the scanning of more deeply

nested archives. Furthermore, skip scanning highly

compressible files, and skip scanning archives that

cannot be extracted because they are corrupt. This is

the default.

• Block file. Block the file.

When a password-

protected file is found in