Yes. So long as you do not have a default gateway set on any interface, and have no static routes, there is no way for it to communicate with any destination that's not at an address belonging to the same network as its interface IP(s). It won't know what to do for a return path for any inbound packet (but it WILL potentially receive them if your firewall forwards something to it, though in practice this would only matter for UDP, as it won't be able to complete a 3-way handshake to establish a socket for TCP communication), and it won't know what to do with an outbound destination. You could enable Windows Firewall and turn off any inbound exceptions as well.
So, unless you have some sort of proxy (including something like stunnel) running on another host on your local network, it is largely isolated from the public. This applies to IPv4 anyway--IPv6 has some magic extra autoconfiguration crud, but XP didn't talk IPv6 anyway. The bigger problem, though, is that short of a strict host firewall it could still be compromised by anything else on your network. Excluding unpatched systems, the biggest risk IMO would be IoT devices, such as cameras. Frankly, unless there's something specific you need XP for, junk it and replace it with either a tablet/chromebook or even a cheap low-end Windows laptop. -----Original Message----- From: Hardware [mailto:hardware-boun...@lists.hardwaregroup.com] On Behalf Of Winterlight Sent: Monday, August 27, 2018 6:47 PM To: hardw...@lists.hardwaregroup.com Subject: Re: [H] LAN but no internet yeah... that's the problem. It might work. Even if I can't go to an ip address with the browser can I be sure there isn't another way in hmmmmm thanks At 05:25 PM 8/27/2018, you wrote: >If you don't specify a gateway and use direct IP (not workstation name) >connections it might work. > >lopaka > >On Mon, Aug 27, 2018 at 4:08 PM Winterlight ><winterli...@winterlight.org> >wrote: > > > I have a old XP PRO laptop. I want to use it on my LAN but for > > security reasons do not want it connected to the internet. So how do > > I disable the LAN connection without interfering with the LAN > > connection? Thanks > > > >
