Inspired by this comment to try to learn what I’m missing.

  • Cloudflare proxy
  • Reverse Proxy
  • Fail2ban
  • Docker containers on their own networks
  • irmadlad@lemmy.worldEnglish
    0·
    2 days ago

    My new strategy is to block EVERY port

    Wow! All 65535 +/-, in and out? That’s one way to skin a cat.

    • gamer@lemm.eeEnglish
      0·
      2 days ago

      ez pz:

      #!/usr/sbin/nft -f
table inet filter {
    chain input {
        type filter hook input priority raw; policy accept;
        iif "lo" accept
        ct state established,related accept
        iif "enp1s0" udp dport 51820 accept
        iif "enp1s0" drop
    }

    chain forward {
        type filter hook forward priority raw; policy accept;
        iif "lo" accept
        ct state established,related accept
        iif "enp1s0" udp dport 51820 accept
        iif "enp1s0" drop
    }

    chain output {
        type filter hook output priority raw; policy accept;
    }
}