Stopping a PC connecting to the Internet

;-)

Yes, home network with about a dozen or so machines hung off it

Andrew

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Still not sorted your own PC out, then?

Is there any way you can run a command line instruction just before any cutting?

That and a blank gateway IP address should make things pretty safe.

I'd have thought it was simple. If its got a wifi adaptor, the unload its drivers and tell it not to use this device in thehardware part of control panel. If its a wired oonly pc which most of my home ones are, theere is no wifi, just a network cable, so it can be unplugged

Of course one place that infection can come from is the ramstick you bring in your designs etc on, so one needs to be very careful. Brian

I think the point of the exercise was to maintain a LAN connection with limited access, but not allow that machine internet access even if the router provided it for the rest of the LAN.

Correct :)

Andrew

People have suggested various options which amount to mis-configuring things so they can't talk. That's a bit fragile because if they manage to successfully configure (eg make a DHCP request) then it'll blow through the 'protection'.

If you want actual segregation, you have a couple of options:

The second approach is the 'enterprise' way of doing this - it scales to make larger systems with many overlapping networks over the same physical cabling. It's much more sustainable than short-term hacks.

Theo