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Network Share Protection - Block all SMB when not connected to company network

Dear All, 

we would like to block all SMB traffic on our endpoints while they are not connected to the company network. Is it possible for DLP to detect whether the endpoint is connected to the domain? I do not see any option in the network share protection rule template.

Thank you very much and kind regards,


2 Replies

Re: Network Share Protection - Block all SMB when not connected to company network

On the endpoint right click McAfee Agent> McAfee Agent Status Monitor> Manage Features> DLP Endpoint Console> About> you will see there has a "Corporate Connectivity" feature, which is used by DLP to determine if the client machine is connected to the corporate network or not. By default DLP will perform some kind of DNS queries to your ePO server, if the DNS lookup is done successfully, then DLP Corporation Connectivity status will be "Connected to Corporate Network".

Meanwhile in DLP Policy Manager> your rule set>your Network Share Protection rule> Reaction>Computer disconnected from the corporate network, your can determine to use the same reaction or not if computer disconnected form corporate network.


And again, It's not possible to BLOCK it, you can only MONITOR it by using Network Share Protection rule.

McAfee Employee
McAfee Employee
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Message 3 of 3

Re: Network Share Protection - Block all SMB when not connected to company network

Hi @FA1 ,

DLP can detect whether endpoint is connected to Domain (Corporate Network) or not to Domain (not connected to Corporate Network)

So when your machine is not connected to corporate network DLP endpoint console will show you the below details,



You can set the DLP rule to take actions when the DLP endpoint console shows "Not Connected to Corporate Network" using the Rules reaction tab as below,


NSP action.PNG

Note: DLP Network Share Protection Rule can only Monitor the data transferred to the network share paths and cannot block the Network Share Itself.


Thank you.

Jithendran S
McAfee Employee
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