Re: Linux machine hit by ransomware
On Wed, Jul 09, 2025 at 23:23:29 -0700, David Christensen wrote:
> On 7/9/25 22:14, Rick Macdonald wrote:
> > In 30 years I've never seen an isolated network. May I ask how this
> > might be done?
>
> Assuming an Internet gateway with 4 LAN ports and Wi-Fi, and a server with 1
> LAN port, turn off everything except the gateway, connect the server LAN
> port to a gateway a LAN port (via switches, if needed), and boot the server.
> Add wired hosts by connecting their LAN port to a gateway LAN port (via
> switches, if needed). Add Wi-Fi hosts by booting them.
An alternative example (with no Wi-Fi):
* One switch or hub. Connect to power.
* Two or more computers. Connect to the switch/hub, and to power.
* On each computer, set an appropriate address manually, so they can
talk to each other.
Use any non-routable IP addressing you like. 192.168.1.* is a common
choice.
As an even simpler example, if you only have *two* computers, you can
connect them directly to each other, without needing a switch/hub.
Back in the olden days (before gigabit ethernet adapters), you would
have needed a special crossover ethernet cable for this. Now, on modern
devices, you should be able to use a regular ethernet cable.
Reply to: