{ pkgs, lib, config, machines, ... }: { services.sshd.logLevel = "VERBOSE"; services.fail2ban = { enable = true; banaction = "nftables-multiport"; banaction-allports = "nftables-allports"; bantime-increment = { enable = true; factor = "1"; formula = "ban.Time * (1 << min(ban.Count, 20)) * banFactor"; maxtime = "1y"; multipliers = ""; overalljails = false; rndtime = ""; }; packageFirewall = pkgs.nftables; ignoreIP = [ machines.mermet.extraArgs.ipv4 machines.losurdo.extraArgs.ipv4 "198.252.154.1" # wren.riseup.net ]; jails = { DEFAULT = '' ''; sshd = '' enabled = true bantime = 5m findtime = 1d maxretry = 1 mode = aggressive ''; postfix = '' enabled = true bantime = 5m findtime = 1d mode = aggressive ''; }; }; environment.etc."fail2ban/action.d/nftables-common.local".text = '' [Init] blocktype = drop ''; }