Recently my network got hit by a spamming virus/malware. I need to block email ports on all the workstations. I read other forums that suggest I use IPSec via GPO to block specific ports on the workstations, but none of them are very detailed.
I open the Group Policy Management, but not sure where to go from there to create a new GPO?
There is no way to enforce that. SBS is not a gateway/edge device. And that is where such rules are enforced. Even small businesses should have a UTM at their edge. The companies I listed above all make
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