I know. I was there, before Sanford Wallace invented the email spam and forced any sane SMTP server into password protections and whitelists.

“Low volume” vs. “A few hundred mails per month”

OK, what of the above?

You should put fixed IP addresses outside the DHCP allocation range. While a DHCP server might be smart enough to exclude a fixed address automatically, this is not a must. So better safe than sorry.

I’m using IONOS for more than a decade now, and it works fine. I’m not into too much of web design, though, the personal web site is just a storage facility to move files around. I think they have quite some tools to develop professional web sites. Also allows for SSH access, which was helpful when I could not delete some files with filezilla.

Mail is good, too (Domain + 10 email accounts + catchall).

Where is the point? One is a dedicated GPU, the other is an integrated graphics engine. One is for gamers (or was many years ago), the other for people using Word or Excel.

This is not a bandaid, this is the solution. What you try is, at least for this scenario, the band aid.

There are GSM modems that can be used by the server to send an SMS. I nearly bought one when it was cheap, but noticed just in time that the GSM level of that device was 3, which is no longer available here. And it needs a valid Sim card to work.

That’s risky. Anyone who can access this can basically blow in some real voltage and power to burn the hardware.

Nearly everything. There are a few locks he can’t actually pick, and some others where he said he would use them himself, which I would take as a “basically unpickable for anyone else”.

I have no idea whether a smart lock ever entered this category.

Whatever lock you think of, check the lockpicking lawyer YT channel for it. If he has reviewed it, check how he rates it. In general, he opens those things in seconds.

…and there are people who play Dwarf Fortress.

You don’t own anything that is not on your own system and/or without any DRM.

Well, I think it is necessary if you have mobile devices. Anything nailed down should be connected by wire, but if it is mobile, it should get the connection. Especially if the cell phone link is not that good inside the house.

MAC whitelist.

I know that this would be the most secure way. But I seriously doubt that this level is necessary in a normal home network.

That’s what MAC whitelists are for. Your DHCP server should be able to handle this.

Identify your friendly devices and give them one setting with everything (full subnet and correct default GW). Identfy your IoT devices, and give them another (full, or specially limited subnet mask, and fake default GW, maybe a different nameserver, too). Anything else is guest and gets a very limited subnet mask and a working default GW.

I’m pretty sure I don’t do this ;-) I know how routing works.

Then why don’t you ask the people who do this?

But you don’t need several LANs for this. This can easily done with proper routing. A can access internet and internal network addresses. B can only access internet, and C can only reach internal addresses.

Why would you want to do this, anyway? Or, as I as a developer regularly have to ask our sales people: what do you actually want to achieve that led you to this question?