This code, Content Policy Language statement, instructs the ProxySG to look at the Content-Length header field of the HTTP response. If the length of this character string has between 9 and 12 digits (i.e. the length is between 100,000,000 to 999,999,999,999 bytes) then the file will not be passed to the ProxyAV for scanning. So files of at least 100MB in size will not be scanned.
Note: This statement applies only to HTTP-based file transfers.
Alternatively, you can configure the ProxyAV appliance to not scan files that are considered to be too large. However, when you configure the do not scan rule on the ProxyAV appliance, the ProxySG will continue to transfer files to the ProxyAV before the ProxyAV looks up the rule to not scan the content. Therefore, implementing the code shown in the example above is a better way to manage large files that do not need AV scanning.
Imported Document ID: 000009714
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