How to configure the gateway to reject downloads greater than X MB.

[Marquevis]

Hello everybody.

I received a request from a customer to configure a rule in the gateway policy to block downloads of files larger than 500 MB.

I enabled https inspection to the gateway can do full inspection on the HTTPS protocol and I enabled the content Awareness blade so I can create the rules.

Import the https inspection certificate to the client machine and see the inspection being done.

I created the rule in my policy with the source being an AD group, the destination INTERNET and in the "Content" column I put it to consider any direction. I also added the "Large Archive", "Large Archive" objects and a few others (the screenshot is attached).

I configured the "Large Archive" and "Large Archive" objects to identify files larger than 500 GB in the properties. I even put a smaller size (for example 1MB, 10MB) to test too.

When the client starts downloading the file (for example, a 1 GB ISO) I see that the traffic does not match the rule I created.

So I have two questions: Can I meet the customer's requirements at the gateway? If so, what else needs to be done?

The customer has a centrally managed enterprise gateway cluster in version R81.10 take 95.

[_Val_]

Which rule is being matched when you download a large file?

[_Val_]

Which rule is being matched when you download a large file?

[_Val_]

Also, did you try to change the Access Role to just the local network? Is file downloaded through office to internet HTTPS session? Not enough info here to help you out.

[Marquevis · Accepted solution]

Hello,

We discovered that checkpoint is compatible with some file extensions.

We were testing on a website that downloads files with the .dat extension. This extension is not compatible, so it did not match the rule.

Reference follows:

https://sc1.checkpoint.com/documents/R81/WebAdminGuides/EN/CP_R81_DataLossPrevention_AdminGuide/Topi...

For our configuration to work, we use content awareness and https inspection.