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Unable to download product updates that pass through InterScan Web Security Suite (IWSS)

    • Updated:
    • 5 Oct 2015
    • Product/Version:
    • InterScan Web Security Suite 3.1 Linux
    • Platform:
    • Linux - Red Hat RHEL 3 32-bit
    • Linux - Red Hat RHEL 5 32-bit
    • Linux - SuSE version 10
    • Windows 2000 Server
    • Windows 2003 Enterprise Server
Summary

Some compressed files or third-party products cannot be downloaded through IWSS. The HTTP Log shows Corrupted_Zip_File every time a file is downloaded. This occurs even though Deferred Scanning is selected.

When IWSS encounters a corrupted compressed file, it performs the action indicated in the settings of the intscan.ini file.

Details
Public

To resolve this issue, please do the following:

Option I: Exclude the URL from where the file is downloaded

  1. Identify the URL by opening the access log under the ..IWSS\Log directory or opening the tb_url_usage and tb_violation tables of the IWSS database with query tools.
  2. Add the URL in the intscan.ini file.
    1. Using a text editor, open the file from the ..\IWSS directory.
    2. Look for the "client_skip_content=Host" parameter.
    3. Add the URL. Separate multiple URLs with commas.
      For example, client_skip_content=Host: www.companyA.com.
    4. Save the settings and close the file.
  3. Restart the Trend Micro IWSS for HTTP services.

Option II: Exclude the file type from the download

  1. Identify the file type from the User-Agent entry in the packet header.
  2. Use a packet sniffer to capture the traffic going through the IWSS server.
  3. Add the file type in the intscan.ini file.
    1. Using a text editor, open the file from the ..\IWSS directory.
    2. Look for the "client_skip_content=User-Agent" parameter.
    3. Add the file type.
      For example, client_skip_content=User-Agent: AgentName, Host: www.companyA.com.
    4. Save the settings and close the file.
  4. Restart the Trend Micro IWSS for HTTP services.
Premium
Internal
Rating:
Category:
Troubleshoot
Solution Id:
0123799
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