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Custom Firewall (lemmy.ml)
submitted 10 months ago* (last edited 10 months ago) by to c/selfhosted@lemmy.world
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I am searching for a firewall for my self hosted services. It should be conpatible with docker, podman and native running services. I should block clients with to many fauled authentication attempts. It should also support blocklists and be as easy to configure as possible (and foss ofc). I took a short look at fail2ban, but the github docs are just lacking so much information that I was looking for (like how to configure it). CrowdSec lookes not foss enough for me.

Any recommendations? Maybe some fail2ban guide?

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[–] 11 points 10 months ago* (1 child)

Your services would first of all need some sort of integration to report failed authentication attempts to your firewall or you wouldn't have anything to act on to start the block. Sounds complicated edit: and also what fail2ban does by reading logs it seems.

If I were you I would ponder if it wouldn't be easier to just setup a headscale/wireguard/openvpn server and connect to your other services through that.

My favourite home firewall right now would be opnsense

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  • [–] [S] 2 points 10 months ago* (2 children)

    I fuess I can get that info from most services vy parsing their logs.

    When using a vpn server, only I could access the services right?

    Isnt opnsense only for bsd? I am running linux.

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  • [–] 3 points 10 months ago*

    Isnt opnsense only for bsd? I am running linux.

    opnsense is bsd based yes, you can either run it on it's own hardware in front of your server or you can run it as a virtual machine and passthrough your hosts network ports to it for WAN/LAN.

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  • [–] 0 points 10 months ago

    When using a vpn server, only I could access the services right?

    You can easily setup vpn users for friends/family but a random person on the internet won't reach your services if you block access from WAN and forces everyone to go through the vpn server.

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    • [–] 4 points 10 months ago (1 child)

    Not exactly sure what you're looking for here; neither fail2ban nor crowdsec are firewalls by their strict definitions.

    Are you looking for an IDS/IPS or other security measures? If so, what are you trying to secure?

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  • [–] [S] 1 point 10 months ago (1 child)

    Inam trying to secure aelf hosted webservices against attackers. I noticed some attack attempts in my caddy logs.

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  • [–] 5 points 10 months ago

    Well, it wouldn't hurt anything to install fail2ban and enable the popular templates, but it sounds like you might need to explain your service layout and how it's exposed to the web before anyone can suggest a security measure.

    Generally in the self-hosted space there are two common approaches: set up a VPN into your network for your trusted devices, or set up a reverse-proxy with a trusted tunneling proxy like cloudflare.

    That you are seeing "attack attempts" in your caddy logs should be elaborated as well. What exactly are you seeing?

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    • [+] 1 point 10 months ago* (last edited 4 months ago)
    [deleted]
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    [–] 1 point 10 months ago (1 child)

    Maybe Pivpn ? Yes, you'll need a small raspberry Pi, but then you can have it run wireguard to access all your home server gear. And then you have the added feature of putting Pinhole on there as well. Works for me here.

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    • [–] 1 point 10 months ago* (last edited 10 months ago)

    I use firewalld as generic firewall and fail2ban as IPS/anti-bruteforce solution (blocks IPs using firewalld's ipsets)

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