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Sophos download scanning and HTML5 audio streams

I help run an Internet radio station and we're running into issues with Sophos Endpoint Security and Control download scanning and streaming audio with the HTML5 audio tag. Essentially, when download scanning is enabled, Sophos will buffer 2MB of the stream before handing it to the browser. This causes the stream to be delayed by several minutes. Is there a workaround we can deploy on our side? We'd rather not have to ask people to disable download scanning.

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0 jak over 11 years ago

Hi,

Not sure if you can do much on the server side.

The main config for web scanning is as follows (factory.xml):

          <mimeTypeList>
                                <item>text/html</item>
                                <item>text/javascript</item>
                                <item>text/emcascript</item>
                                <item>text/vbscript</item>
                                <item>audio/unknown</item>
                                <item>image/*</item>
                                <item>video/*</item>
                                <item>application/octet-stream</item>
                                <item>application/javascript</item>
                                <item>application/x-javascript</item>
                                <item>application/emcascript</item>
                                <item>application/vbscript</item>
                                <item>application/xhtml</item>
                                <item>application/x-msdos-program</item>
                                <item>application/x-msdownload</item>
                                <item>application/x-zip-compressed</item>
                                <item>application/vnd.ms-htmlhelp</item>
                                <item>application/x-msmetafile</item>                                
                                <item>application/zip</item>
                            </mimeTypeList>
                            <contentSizeLimit>2048</contentSizeLimit>

So unless you can change the mime type of the content so it doesn't match the above it would have to be a client side change.

Regards,

Jak

Reply

0 jak over 11 years ago

Hi,

Not sure if you can do much on the server side.

The main config for web scanning is as follows (factory.xml):

          <mimeTypeList>
                                <item>text/html</item>
                                <item>text/javascript</item>
                                <item>text/emcascript</item>
                                <item>text/vbscript</item>
                                <item>audio/unknown</item>
                                <item>image/*</item>
                                <item>video/*</item>
                                <item>application/octet-stream</item>
                                <item>application/javascript</item>
                                <item>application/x-javascript</item>
                                <item>application/emcascript</item>
                                <item>application/vbscript</item>
                                <item>application/xhtml</item>
                                <item>application/x-msdos-program</item>
                                <item>application/x-msdownload</item>
                                <item>application/x-zip-compressed</item>
                                <item>application/vnd.ms-htmlhelp</item>
                                <item>application/x-msmetafile</item>                                
                                <item>application/zip</item>
                            </mimeTypeList>
                            <contentSizeLimit>2048</contentSizeLimit>

So unless you can change the mime type of the content so it doesn't match the above it would have to be a client side change.

Regards,

Jak

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