Selfhosted
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
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I have my 22 port opened on IPv6 only and I can only authenticate with my private keys, which are all added in .ssh/authorized_keys. Fail2ban is configured to keep the bots out but the ban log is empty because there are either no bots operating on IPv6 yet or my IP is so far out of reach it will take the bot a millenium to get to my address.
Some set up WireGuard or another VPN protocol but I like having everything within reach as long as the device I'm carrying has my key on it.
One thing you should avoid is opening your docker containers to the web. If your VPS isn't behind a NAT (they usually aren't) becareful when binding ports which usually bypasses whatever firewall configuration you may have because docker writes it's changes directly to nftables.
https://docs.docker.com/network/#published-ports
Other then that, remember that this is just a hobby (for now) and take a break when something doesn't work or you don't understand it. I personally did a lot of mistakes because I was just eager to finish something and I was rushing it.
Accidentally exposing a database port when you deploy a database container has bitten so many asses. ElasticSearch and MongoDB were famous for this, so many databases exposed to the internet without authentication because the owners didn't know docker can bypass iptables-based firewall when assigning ports and ElasticSearch and MongoDB weren't ship with authentication enabled back then.