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How do you all handle security and monitoring for your publicly accessible services? (lemmy.world)

submitted 2 days ago* (last edited 2 days ago) by a_fancy_kiwi@lemmy.world to c/selfhosted@lemmy.world

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This is a continuation of my other post

I now have homeassistant, immich, and authentik docker containers exposed to the open internet. Homeassistant has built in 2FA and authentik is being used as the authentication for immich which supports 2FA. I went ahead and blocked connections from every country except for my own via cloudlfare (I'm aware this does almost nothing but I feel better about it).

At the moment, if my machine became compromised, I wouldn't know. How do I monitor these docker containers? What's a good way to block IPs based on failed login attempts? Is there a tool that could alert me if my machine was compromised? Any recommendations?

EDIT: Oh, and if you have any recommendations for settings I should change in the cloudflare dashboard, that would be great too; there's a ton of options in there and a lot of them are defaulted to "off"

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[–] pezhore@infosec.pub 4 points 2 days ago

This is the way. Layer 3 separation for services you wish to access outside of the home network and the rest of your stuff, with a VPN endpoint exposed for remote access.

It may be overkill, but I have several VLANs for specific traffic:

DMZ - for Wireguard (and if I ever want to stand up a Honeypot)
Services - *arr stack, some Kubes things for remote development
IoT - any smart things like thermostat, home assistant, etc
Trusted - primary at home network for laptops, HTPCs, etc

There are two new additions: a ext-vpn VLAN and a egress-vpn VLAN. I spun up a VM that's dual homed running its own Wireguard/OpenVPN client on the egress side, serving DHCP on the ext-vpn side. The latter has its own wireless ssid so that anyone who connects to it is automatically on a VPN into a non-US country.