Attachment is showing as part of body when uploads from Internet Explorer 10 or 11. If same attachment is uploaded via IE 8 or IE 9 it appeas as attachment in Incident snapshot.
Uploaded file to mail.naver.com via IE 8. IE 8 uploaed file using "Content-Type: multipart/form-data" method as result of this we received incident where attachment name is displayed as attachment instead of body. Where as the same upload via IE 11 uses method "Content-Type: application/x-www-form-urlencoded; charset=utf-8" which shows file name as body instead of attachment in incident.
Content-Type: multipart/form-data; boundary=---------------------------7df7929160242
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2)
By default DLP Network Monitor and Web prevent support multipart/form-data method for attachmet. For any different method like application/x-www-form-urlencoded we need to modify NonMultipartAttachment.properties file.
In order to detect attachmet we need to update NonMultipartAttachment.properties file as below.
1>. Take backup of file C:\SymantecDLP\Protect\config\NonMultipartAttachment.properties
2>. Add below line to NonMultipartAttachment.properties.
Host == mail.naver.com && URI == upload :: HEADERFIELD:filename
Host == link.ndrive.navercorp.com && URI == upload :: HEADERFIELD:filename
Host == ndrive1.navercorp.com && URI == upload :: HEADERFIELD:filename
NOTE: If there is any uncomment line for naver.com present in this file comment it before appending above 3 lines.
3>. Recycle VontuMonitor service on Web prevent server.
4>. Send web mail from mail.naver.com with attachment. Check out triggered incident and see if attachment file name is captured
as attachment instead of body.
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