Technical Support, Troubleshooting, and FAQs
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Scanning multiple layers of compression can slow down overall system performance,
which is why the default for this parameter is 10. After detecting 10 layers of
compression, InterScan Gateway Security Appliance abandons the scan task and
blocks the file.
Although InterScan Gateway Security Appliance can detect viruses in even the 20th
layer of compression, it will only clean an infected file if it is detected in the first
compression layer.
Decompressed file exceeds "x" times of compressed:
x: Default setting is 10
The InterScan Gateway Security Appliance provides this feature as a guard against
so-called "zip of death" threats, where one or more files of a particular nature have
been "super compressed." For example, to block a file that is 10MB before being
compressed but is only 2 MB after being compressed, type
5
in this field, because
10MB is five times larger than 2MB.
In a compressed archive comprised of multiple files, if the compression factor of one
or more files exceeds the number specified here, the appliance blocks the compressed
file.
Summary of Contents for InterScan M Series
Page 1: ...InterScan TM Gateway Security Appliance M Series...
Page 2: ......
Page 16: ...Trend Micro InterScan Gateway Security Appliance M Series Administrator s Guide xiv...
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Page 82: ...Trend Micro InterScan Gateway Security Appliance M Series Administrator s Guide 3 22...
Page 100: ...Trend Micro InterScan Gateway Security Appliance M Series Administrator s Guide 4 18...
Page 135: ...SMTP Services 5 35 SMTP Content Filtering Target FIGURE 5 20 SMTP Content Filtering Target...
Page 140: ...Trend Micro InterScan Gateway Security Appliance M Series Administrator s Guide 5 40...
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Page 250: ...Trend Micro InterScan Gateway Security Appliance M Series Administrator s Guide 10 12...
Page 258: ...Trend Micro InterScan Gateway Security Appliance M Series Administrator s Guide 11 8...
Page 267: ...Analyzing Your Protection Using Logs 12 9...
Page 268: ...Trend Micro InterScan Gateway Security Appliance M Series Administrator s Guide 12 10...
Page 366: ...Trend Micro InterScan Gateway Security Appliance M Series Administrator s Guide 15 46...
Page 372: ...Trend Micro InterScan Gateway Security Appliance M Series Administrator s Guide A 6...
Page 428: ...Trend Micro InterScan Gateway Security Appliance M Series Administrator s Guide B 56...
Page 446: ...Trend Micro InterScan Gateway Security Appliance M Series Administrator s Guide D 6...
Page 448: ...Trend Micro InterScan Gateway Security Appliance M Series Administrator s Guide E 2...
Page 460: ...Trend Micro InterScan Gateway Security Appliance M Series Administrator s Guide G 4...
Page 480: ...Trend Micro InterScan Gateway Security Appliance M Series Administrator s Guide I 20...