General Discussion
In reply to the discussion: There was no Vermont electrical grid hack [View all]FarCenter
(19,429 posts)There is the actual electrical grid, which imports/produces electrical power and distributes it to customers. They are pretty small, with 16,000 residential customers and more than 3600 commercial customers.
There is the grid command and control system used to manage the electrical grid, and ideally its network is air-gapped from any other, or it is connected via a severely restrictive firewall.
Then there are the administrative systems for accounting, billing, customer records, etc. Again, these should be on their own networks, with multiple security zones separated by firewalls.
Lastly are the internet connected systems, such as the public web server, which should be on their own networks with firewalls to the internet. There may also be VPN systems to allow off-site workers to access the administrative systems.
What they are saying is that the laptop wasn't on the grid command and control system network.