Blocking "Internet Download Manager"

Hello nbctcp,

IDM does not have a set or protocol they use. All it does is split the download into multiple chunk sizes with the HTTP header "Range: bytes=". We cover these headers with the Application Control signatures "HTTP.Segmented.Download" and "HTTP.Download.Accelerator". If you download via HTTPS, please enable SSL deep inspection in FortiOS 5.0 and above.

In addition, you will need to add the following custom application control signature for FTP segmented downloading.

F-SBID( --protocol tcp; --flow from_client; --service FTP; --pattern "REST|20|"; --context packet; --within 5,context; --no_case; --app_cat 15; --weight 20; )

Please let me know if the above instructions do not work.

Hi Team,

Are you able to block the Internet download manager with application specific signature ? 

If so what is the procedure. 

As it does not uses any protocol or unique headers. 

Suggestions appreciated. 

Thanks