To scan upload and download document to/from SharePoint Portal, You need to configure antivirus on Ceteral Administration > Operation > Antivirus.
Take note that you can activate antivirus measures only after installing a compatible antivirus scanner. In a server farm, you must install antivirus software on every Web front-end server in the server farm.
To enable Antivirus Settings section, Select one or all of the following:
- 1. Scan documents on upload
2. Scan documents on download
3. Allow users to download infected documents
4. Attempt to clean infected documents