Simplest option would be to just use a switch to the other premise rather than a router otherwise you will likely hit double NATing issues. Then all devices in both homes can use the same subnet. Depending upon the router that is used for the WAN connection you could setup two subnets and DHCP on both if more network separation was needed.Oh yeah, one other thing- your mate needs to use the Internet RJ45 socket on his router to connect to a standard port on your router. Otherwise DHCP may start causing issues
Why is it illegal?It's illegal but then you probably don't care about that.
Why is it illegal?
there is a nagging thought that I have to be concerned with earthing here.
Indeed. I've never bothered to look, but I would assume that (for fairly obvious commercial reasons) ISP contracts forbid the sharing of a single internet connections whether cabled or WiFi by several households/whatever - but, as you say, that's purely a civil matter.It probably breaks the contract he has with the ISP, but that would be a civil matter, not illegal per se.
My internet connection is, and has been for many years, from a microwave dish on a nearby hill. A company was set up to provide that service to my, and surrounding, villages at a time when BT's (copper) cables could do little better than 0.5 Mbps. Subsequently, BT have brought an optical cable to the village and, more recently, Gigaclear have cabled our village. However, my ISP seems to be continuing to do fairly well (i.e. surviving!), with its microwave PTP system, I presume because many/most of their customers (virtually all private houses) find the service (8 -15 Mbps for some, up to about 32 Mbps for others) to be more than adequate for our needs.Some one I know set up microwave dishes between to towns when OpenReach refused to bring in broad band, it ran around a year, as soon as OpenReach realised what was going on they did bring broadband to Ruthin as well as Denbigh, he just about broke even, as soon as available direct then he lost all of his customers, since mainly firms not private houses and some years ago he did not have any problems with illegal downloads, but he did end up with a lot of equipment which was redundant.
A few decades ago ( GPO days ) running any communications cable between two properties that involved crossing a third person's property had to be a GPO installed Private Wire.
I would assume that is no longer the case (*) provided all the property owners involved agree to grant a wayleave for the cable to cross their properties.
(*) or it is still the case but simply is not practical to enforce against short distance and concealed DIY private wires.
Long since repealed when liberalisation happened and the GPO, later BT, lost their monopoly.
So who would you use to run a single pair from one house to another house across the road. ?
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