Although Trend Micro recommends that you schedule IWSVA to perform automatic updates
of the scan engine, you can do it manually, as shown below.
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Download the latest scan engine from the Trend Micro Web site.
Enter the following search criteria:
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Category: Internet Gateway
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Product: InterScan Web Security Virtual Appliance
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Version: Current product version
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Download Types: No selection
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Extract the contents of the vsapi-x86-linux-#.###-####.tar.Z file to a temporary directory.
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Stop the IWSVA HTTP and FTP daemons from the Management Console.
Go to the Summary page and simply turn off and on the HTTP(S) Traffic and FTP Traffic links.
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Back up the following scan engine files:
/etc/iscan/lib/libvsapi.so
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Extract the new scan engine files from their temp directory to the following:
/usr/iwss/lib/libvsapi.so
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Ensure the permission is the same as the original engine:
rwxr_xr_x iscan iscan libvsapi.so
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Stop and restart HTTP using the following commands:
/etc/iscan/S99ISproxy stop
/etc/iscan/S99ISproxy start
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Stop and restart FTP using the following commands:
/etc/iscan/S99ISftp stop
/etc/iscan/S99ISftp start