nixos/iodine: hardening
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@ -9,6 +9,8 @@ let
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iodinedUser = "iodined";
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/* is this path made unreadable by ProtectHome = true ? */
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isProtected = x: hasPrefix "/root" x || hasPrefix "/home" x;
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in
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{
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imports = [
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@ -134,6 +136,24 @@ in
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serviceConfig = {
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RestartSec = "30s";
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Restart = "always";
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# hardening :
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# Filesystem access
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ProtectSystem = "strict";
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ProtectHome = if isProtected cfg.passwordFile then "read-only" else "true" ;
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PrivateTmp = true;
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ReadWritePaths = "/dev/net/tun";
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PrivateDevices = false;
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ProtectKernelTunables = true;
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ProtectKernelModules = true;
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ProtectControlGroups = true;
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# Caps
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NoNewPrivileges = true;
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# Misc.
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LockPersonality = true;
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RestrictRealtime = true;
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PrivateMounts = true;
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MemoryDenyWriteExecute = true;
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};
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};
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in
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@ -147,6 +167,24 @@ in
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after = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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script = "exec ${pkgs.iodine}/bin/iodined -f -u ${iodinedUser} ${cfg.server.extraConfig} ${optionalString (cfg.server.passwordFile != "") "< \"${cfg.server.passwordFile}\""} ${cfg.server.ip} ${cfg.server.domain}";
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serviceConfig = {
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# Filesystem access
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ProtectSystem = "strict";
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ProtectHome = if isProtected cfg.server.passwordFile then "read-only" else "true" ;
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PrivateTmp = true;
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ReadWritePaths = "/dev/net/tun";
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PrivateDevices = false;
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ProtectKernelTunables = true;
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ProtectKernelModules = true;
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ProtectControlGroups = true;
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# Caps
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NoNewPrivileges = true;
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# Misc.
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LockPersonality = true;
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RestrictRealtime = true;
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PrivateMounts = true;
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MemoryDenyWriteExecute = true;
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};
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};
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};
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