121 lines
3.6 KiB
Nix
Executable file
121 lines
3.6 KiB
Nix
Executable file
{
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pkgs,
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lib,
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config,
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...
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}: {
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services.fail2ban = {
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enable = true;
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bantime = "24h";
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bantime-increment = {
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enable = true;
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formula = "ban.Time * math.exp(float(ban.Count+1)*banFactor)/math.exp(banFactor)";
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maxtime = "6969h";
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overalljails = true;
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};
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jails = {
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dovecot = lib.mkIf config.services.dovecot2.enable {
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settings = {
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# block IPs which failed to log-in
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# aggressive mode add blocking for aborted connections
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filter = "dovecot[mode=aggressive]";
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maxretry = 3;
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};
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};
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jellyfin = lib.mkIf config.services.jellyfin.enable {
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settings = {
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filter = "jellyfin";
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backend = "systemd";
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enabled = true;
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port = "80,443";
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maxretry = 8;
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bantime = "24h";
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findtime = "30m";
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journalmatch = "_SYSTEMD_UNIT=jellyfin.service";
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};
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};
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forgejo = lib.mkIf config.services.forgejo.enable {
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settings = {
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filter = "forgejo";
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backend = "systemd";
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enabled = true;
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port = "80,443";
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maxretry = 8;
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bantime = "24h";
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findtime = "30m";
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journalmatch = "_SYSTEMD_UNIT=forgejo.service";
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};
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};
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sonarr = lib.mkIf (config.microvm.vms."auto-torrent" != null) {
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settings = {
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filter = "arr";
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backend = "auto";
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enabled = true;
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port = "80,443";
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maxretry = 8;
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bantime = "24h";
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findtime = "30m";
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logpath = "/var/lib/auto-torrent/sonarr/logs/*.txt";
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};
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};
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radarr = lib.mkIf (config.microvm.vms."auto-torrent" != null) {
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settings = {
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filter = "arr";
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backend = "auto";
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enabled = true;
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port = "80,443";
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maxretry = 8;
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bantime = "24h";
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findtime = "30m";
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logpath = "/var/lib/auto-torrent/radarr/logs/*.txt";
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};
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};
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vaultwarden = lib.mkIf config.services.vaultwarden.enable {
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settings = {
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filter = "vaultwarden";
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backend = "systemd";
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enabled = true;
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port = "80,443";
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maxretry = 8;
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bantime = "24h";
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findtime = "30m";
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journalmatch = "_SYSTEMD_UNIT=vaultwarden.service";
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};
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};
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};
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};
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environment.etc = {
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# Jellyfin
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"fail2ban/filter.d/jellyfin.local".text = pkgs.lib.mkDefault (pkgs.lib.mkAfter ''
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[Definition]
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failregex = ^.*Authentication request for .* has been denied \(IP: <ADDR>\)\.
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'');
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# Forgejo
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"fail2ban/filter.d/forgejo.local".text = pkgs.lib.mkDefault (pkgs.lib.mkAfter ''
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[Definition]
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failregex = ^.*Failed authentication attempt for .* from <ADDR>.*$
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'');
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# *arr
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"fail2ban/filter.d/arr.local".text = pkgs.lib.mkDefault (pkgs.lib.mkAfter ''
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[Definition]
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failregex = ^.*Auth-Failure ip <ADDR> username.*$
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'');
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# Vaultwarden
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"fail2ban/filter.d/vaultwarden.local".text = pkgs.lib.mkDefault (pkgs.lib.mkAfter ''
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[Definition]
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failregex = ^.*Username or password is incorrect. Try again. IP: <ADDR>\. Username: .*$
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'');
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# Defines a filter that detects URL probing by reading the Nginx access log
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"fail2ban/filter.d/nginx-url-probe.local".text = pkgs.lib.mkDefault (pkgs.lib.mkAfter ''
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[Definition]
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failregex = ^<HOST>.*(GET /(wp-|admin|boaform|phpmyadmin|\.env|\.git)|\.(dll|so|cfm|asp)|(\?|&)(=PHPB8B5F2A0-3C92-11d3-A3A9-4C7B08C10000|=PHPE9568F36-D428-11d2-A769-00AA001ACF42|=PHPE9568F35-D428-11d2-A769-00AA001ACF42|=PHPE9568F34-D428-11d2-A769-00AA001ACF42)|\\x[0-9a-zA-Z]{2})
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'');
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};
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}
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