diff --git a/system/ids.nix b/system/ids.nix
index fee56a5303b..73fa8c8a0bb 100644
--- a/system/ids.nix
+++ b/system/ids.nix
@@ -12,6 +12,7 @@
     ftp = 8;
     bitlbee = 9;
     avahi = 10;
+    portmap = 11;
 
     nixbld = 30000; # start of range of uids
     nobody = 65534;
@@ -24,6 +25,7 @@
     vsftpd = 7;
     ftp = 8;
     avahi = 10;
+    portmap = 11;
     audio = 17;
 
     users = 100;
diff --git a/system/options.nix b/system/options.nix
index a5bc2f1608d..098f28848c8 100644
--- a/system/options.nix
+++ b/system/options.nix
@@ -923,6 +923,18 @@
 
     };
 
+    portmap = {
+
+      enable = mkOption {
+        default = false;
+	description = ''
+	  Whether to enable `portmap', an ONC RPC directory service
+	  notably used by NFS and NIS, and which can be queried
+	  using the rpcinfo(1) command.
+	'';
+      };
+    };
+
     avahi = {
 
       enable = mkOption {
diff --git a/upstart-jobs/default.nix b/upstart-jobs/default.nix
index 708e14d2894..1cb50903005 100644
--- a/upstart-jobs/default.nix
+++ b/upstart-jobs/default.nix
@@ -158,6 +158,12 @@ let
       servers = config.services.ntp.servers;
     })
 
+  # portmap daemon.
+  ++ optional config.services.portmap.enable
+    (import ../upstart-jobs/portmap.nix {
+      inherit (pkgs) makePortmap;
+     })
+
   # Avahi daemon.
   ++ optional config.services.avahi.enable
     (import ../upstart-jobs/avahi-daemon.nix {
diff --git a/upstart-jobs/portmap.nix b/upstart-jobs/portmap.nix
new file mode 100644
index 00000000000..18ff06dc1af
--- /dev/null
+++ b/upstart-jobs/portmap.nix
@@ -0,0 +1,35 @@
+{ makePortmap }:
+
+let uid = (import ../system/ids.nix).uids.portmap;
+    gid = (import ../system/ids.nix).gids.portmap;
+in
+{
+  name = "portmap";
+  
+  users = [
+    { name = "portmap";
+      inherit uid;
+      description = "portmap daemon user";
+      home = "/var/empty";
+    }
+  ];
+
+  groups = [
+    { name = "portmap";
+      inherit gid;
+    }
+  ];
+
+  job =
+    let portmap = makePortmap { daemonUID = uid; daemonGID = gid; };
+    in
+       ''
+description "ONC RPC portmap"
+
+start on network-interfaces/started
+stop on network-interfaces/stop
+
+respawn ${portmap}/sbin/portmap
+'';
+  
+}