Basic Security For Every Linux Server

You can use "-m" with useradd to create a home directory for the user automatically.

Why did you pick Linode?

I'm actually setting up a server for the first time and this was useful, thank you

Noooo where's the awesomewm ricing video???

I would recommend nftables instead of ip tables.

"...iptables could be a whole video on its own..."
Yes, please!

I rarely update my servers(like once or twice a year). Probably not a good thing :P

Using certificate-based login is not only good for servers accessed via SSH but for notebooks / desktop computers too for local authentication.

I think arch linux is perfectly fine to run on a server if you know what you are doing.
If you do know what you are doing you will NOT auto update an arch system!
From the arch wiki System_maintenance:
Before upgrading, users are expected to visit the Arch Linux home page to check the latest news, or alternatively subscribe to the RSS feed or the arch-announce mailing list.
User interventions can be necessary when updating the system! So auto updating should be out of question if you run Arch, no matter if it is a server or a pc!

I am actually hosting a proxmox server to teach people linux and bring them to linux.

"Keep your VPS nice and secure" Looks at old computer in the corner of the room, "Haha yes I do need to keep my VPS secure"

It is possible to block ssh port and only use vps services web interface to login to server. It is most useful when performing whole system update.

I vote for a dedicated video over iptables on that server.

wait... hold up... bspwm? (I guess this was recorded before you switched)

Now useful content. Thx.

you might want to disable 'ChallengeResponseAuthentication' as well on some other distro to completely disable password authentication.
I think I have encountered some cases where that is left on by default (I believe this is upstream default as well)

There is no way to spoof public ip addresses. That's silly talk.

I would suggest using -m and -G "SECONDARY GROUP" while creating user, which will automatically add user home directory and add it to a provided secondary group (wheel), respectively..