Kerio Tech KERIO WINROUTE FIREWALL 6 - Manual (Page 179)

13.5 Scanning of files transferred via Clientless SSL-VPN (Windows)
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Transfer directions
Use the top section of the SSL-VPN Scanning tab to set to which transfer direction the
antivirus check will be applied. By default, only files downloaded from a remote client to
a local host are scanned to avoid slowdown (local network is treated as trustworthy).
If the antivirus check fails
Options in the lower section of the tab specify an action which will be performed if a file
cannot be scanned for any reason (encrypted or corrupted files, etc.). By default, transfer
of such files is denied.