If using the hook method as the web communication monitoring method
This function must be run in Windows Internet Explorer 9 or higher.
File uploading and downloading through ActiveX and plug-in cannot be prohibited.
When a file is opened and run directly in Internet Explorer, the Web upload and download prohibition function will run.
When the Web page component displayed in Internet Explorer is saved as image, the Web upload and download prohibition function will not be run.
When the entire Web page displayed in Internet Explorer is saved as a file, the Web upload and download prohibition function will not be run.
The policy at startup of the Web browser is effective. When the policy has been changed but the Web browser has been started, the function will be run according to the policy before the change.
During Web upload and download prohibition when Windows Internet Explorer 9 or later is used, the blank page (about: blank will be displayed under the following conditions. When the blank page is displayed, click the Back button to go back to the page displayed before downloading.
When the protection mode performs download from wrong sites
The protection mode can be set in Internet Options > Security tab of Windows Internet Explorer 9 or later.
When a user without administrator authority executes the web upload prohibition as the administrator, the related prohibition logs will be collected but the prohibition message will not be displayed.
In Windows Internet Explorer 11, you can specify host names or IP addresses as the allowed sites for the web upload prohibition feature and web download prohibition feature.
If you specify allowed sites that contain the URL, web upload and web download will not be allowed.
Due to functional changes with the operating system or the Web browsers, web upload and download prohibition may not work normally. When unable to control prohibition/permission normally, consider using the URL access prohibition, which prohibits accessing the target sites to be uploaded to or downloaded from.
Web upload prohibition works only when the Content-Disposition field and filename parameter are set in the data sent. If each of them is not set, the prohibition feature does not work. In this case, consider using the URL access prohibition, which prohibits accessing the target sites to be uploaded to.
If using the local proxy method as the web communication monitoring method
This function must be run in Windows Internet Explorer 9 or higher, Microsoft Edge, Firefox 49 or higher, or Google Chrome 53 or higher.
File uploading and downloading through ActiveX and plug-in cannot be prohibited.
When a file is opened and run directly in Internet Explorer, the Web upload and download prohibition function will run.
When the Web page component displayed in Internet Explorer/Microsoft Edge/Firefox/Google Chrome is saved, the Web upload and download prohibition function will not be run.
When the entire Web page displayed in Internet Explorer/Microsoft Edge/Firefox/Google Chrome is saved as a file, the Web upload and download prohibition function will not be run.
Due to functional changes with the operating system or the Web browsers, web upload and download prohibition may not work normally. When unable to control prohibition/permission normally, consider using the URL access prohibition, which prohibits accessing the target sites to be uploaded to or downloaded from.
Web upload prohibition works only when the Content-Type field, multipart/form-data parameter, boundary parameter, the Content-Disposition field and filename parameter are set in the data sent. If each of them is not set, the prohibition feature does not work. In this case, consider using the URL access prohibition, which prohibits accessing the target sites to be uploaded to.
Web download prohibition works only when the Content-Disposition field and filename parameter are set in the data sent. If each of them is not set, the prohibition feature does not work. In this case, consider using the URL access prohibition, which prohibits accessing the target sites to be downloaded from.
