Hey all, i’ve decided I should probably setup something else to help block nefarious IP addresses. I’ve been looking into CrowdSec and Fail2Ban but i’m not really sure the best one to use.

My setup is OpnSense -> Nginx Proxy Manager -> Servers. I think I need to setup CrowdSec/Fail2Ban on the Nginx Proxy Manager to filter the access logs, then ideally it would setup the blocks on OpnSense - but i’m not sure that can be done?

Any experience in a setup like this? I’ve found a few guides but some of them seem fairly outdated.

Edit: thanks everybody for the great info. General consensus seems to be with crowdsec so I’ll go down that path and see how it goes.

  • Lem453@lemmy.caEnglish
    1·
    1 day ago

    I have traefik running with all config done via the docker compose files and I just couldn’t figure out how to get the bouncer middleware to work without causing problems. Doesn’t help that most examples seem to be based on the static yaml based config so I’m trying to convert jt. Would appreciate anyone who might know of a resource that explains with docker compose environment tags.

    I also have middle ware for things like authentik which complicates things.

    • mbirth@lemmy.mlEnglish
      8·
      1 day ago

      In the Traefik static configuration (usually traefik.yml), add this to load the CrowdSec plugin:

      experimental:
  plugins:
    crowdsec-bouncer-traefik-plugin:
      moduleName: "github.com/maxlerebourg/crowdsec-bouncer-traefik-plugin"
      version: "v1.4.2"

      (The name for the plugin is defined here as crowdsec-bouncer-traefik-plugin.)

      Then, in your dynamic configuration, add this (I’ve used a separate file dynamic_conf/050-plugin-crowdsec-bouncer.yml):

      http:
  middlewares:
    crowdsec-bouncer:
      plugin:
        crowdsec-bouncer-traefik-plugin:
          CrowdsecLapiKey: "...YOUR CROWDSEC LAPI KEY HERE..."
          Enabled: true

      (The name for this new middleware defined here is crowdsec-bouncer. It uses the crowdsec-bouncer-traefik-plugin defined in the previous step. Make sure these names match.)

      You can get the LAPI key by registering a new bouncer in CrowdSec.

      And, finally, make sure all incoming traffic routes through the bouncer plugin. You can do this individually, or in general via the static config:

      entryPoints:

  websecure:
    address: :443
    http:
      middlewares:
        - crowdsec-bouncer@file
        - secure-headers@file

      The middlewares are processed top to bottom.

      Any change to the static configuration requires a restart of Traefik to become active.

    • JASN_DE@feddit.orgEnglish
      2·
      19 hours ago

      In addition to the explanation you got from the other user: once you’ve set up the bouncer middleware in the configs (don’t know if there even exists a good way to do that outside of the configs files), you simply assign the middleware in the compose file as usual.