Week 24: Identify All OT Electronic Security Perimeters - Dale Peterson: ICS Security Catalyst

Week 24: Identify All OT Electronic Security Perimeters - Dale Peterson: ICS Security Catalyst

Last week’s task identified, and initiated steps to remove, all unauthorized or insecure Internet access to OT. The remaining OT network access will come from your IT networks or business partner networks. The first step to evaluating the OT electronic security perimeter is to know what it is. This week is about gathering this information. The information is likely to consist of network diagrams and firewall rulesets. You may also have one-way d…