topic Re: Block specific File extention in Firewall and Security Management

Block specific File extention

Robert_Mueller — Wed, 27 Jun 2018 11:53:37 GMT

Hi,

Is there a way to block specific file extentions? I my case iqy and slk files. I know that they are supported in the newest Engine but how can I block them? I can't specify them in the SmartConsole and I've tried to block them with the "prohibited file types" (tecli command) but it wont work...

I wan to block all files with that extentions when they arrive via Mail...

Robert

Re: Block specific File extention

Gaurav_Pandya — Wed, 27 Jun 2018 12:44:40 GMT

Hi,

You can use DLP feature to block specific file types. Again you need to check that specific file types which you have mentioned is there in database or not.

Re: Block specific File extention

Thomas_Werner — Thu, 28 Jun 2018 09:35:37 GMT

Hi Robert,

we extended TE´s file blocking capabilities since engine version 6.14 (Threat Emulation Engine Update - What's New? )- here is how to use it:

How to configure Threat Emulation blade to block files according to file types

You need to enable "plain" context in case you want to block file types directly attached to e.g. an email:

Enabling plain prohibited file types

Enabling the prohibited file types feature in plain context.

On the Security Gateway, run the following command:

[Expert@HostName:0]# tecli advanced prohibited enable_plain 1

Regards Thomas

Re: Block specific File extention

Benoit_Verove — Thu, 09 Aug 2018 08:20:54 GMT

Hi Robert,

I think you could use the content awarness blade.

You can create a new data type that matches your specific file extension and use it in access rules.

Regards,

Benoit

Re: Block specific File extention

Robert_Mueller — Thu, 09 Aug 2018 08:23:04 GMT

Yes.. is an idea but till we can use it we have to upgrade the cluster nodes to R80.10.. (which will be in some days)..

Re: Block specific File extention

An_Nguyen — Tue, 09 Jul 2019 18:46:13 GMT

I enabled Content Awareness, created a rule to block executable files, pushed policy.

I am still able to download exe files.