diff --git a/system/base-system.scm b/system/base-system.scm
index 3ac65ff..aac5aa9 100644
--- a/system/base-system.scm
+++ b/system/base-system.scm
@@ -13,8 +13,12 @@
   #:use-module (gnu system setuid)
   #:use-module (gnu system nss)
   #:use-module (gnu system pam)
+  #:use-module (gnu services)
+  #:use-module (gnu services dbus)
   #:use-module (gnu services pm)
+  #:use-module (gnu services shepherd)
   #:use-module (gnu services authentication)
+  #:use-module (gnu services configuration)
   #:use-module (gnu services vpn)
   #:use-module (gnu services networking)
   #:use-module (gnu services ssh)
@@ -24,6 +28,7 @@
   #:use-module (gnu services base)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages ssh)
+  #:use-module (gnu packages sssd)
   #:use-module (gnu packages compression)
   #:use-module (gnu packages libedit)
   #:use-module (gnu packages hurd)
@@ -142,7 +147,7 @@
     "RUN+=\"/bin/chgrp video /sys/class/backlight/intel_backlight/brightness\""))
 
 (define %metznet-name-service-switch
-  (let ((services (list (name-service (name "ldap"))
+  (let ((services (list (name-service (name "sss"))
                         (name-service (name "files")))))
     (name-service-switch
       (password services)
@@ -172,6 +177,23 @@
 (define (metznet-pam-services config)
   (list (metznet-pam-service config)))
 
+(define default-sssd-conf-file (plain-file "sssd.conf" (string-join (list
+                                      "[sssd]"
+                                      "domains = metznet.ca"
+                                      "services = nss, sudo, pam, ssh, ifp"
+                                      ""
+                                      "[domain/metznet.ca]"
+                                      "id_provider = ldap"
+                                      "auth_provider = ldap"
+                                      "cache_credentials = True"
+                                      "ldap_uri = ldaps://ldap.metznet.ca"
+                                      "ldap_tls_reqcert = never"
+                                      "ldap_tls_cacertdir = /etc/ssl/certs"
+                                      "ldap_search_base = ou=users,ou=accounts,dc=metznet,dc=ca"
+                                      (string-append "ldap_default_bind_dn = " (getenv "LDAP_BINDDN"))
+                                      "ldap_default_authtok_type = password"
+                                      (string-append "ldap_default_authtok = " (getenv "LDAP_BINDPW"))) "\n")))
+
 (define metznet-service-type
   (service-type
     (name 'metznet-service)
@@ -180,16 +202,73 @@
       (list (service-extension pam-root-service-type metznet-pam-services)))
     (default-value '())))
 
-(define pam-service-list (list "su" "gdm-password" "login" "sshd" "passwd"))
+(define-configuration sssd-configuration
+  (sssd (file-like sssd) "SSSD Package to use")
+  (config (file-like default-sssd-conf-file) "sssd.conf file"))
+
+(define (sssd-pam-service config)
+    (define sssd-pam-module
+      (file-append (sssd-configuration-sssd config) "/lib/security/pam_sss.so"))
+     (lambda (pam)
+       (if (member (pam-service-name pam) pam-service-list)
+           (let ((sufficient
+                  (pam-entry
+                   (control "sufficient")
+                   (module sssd-pam-module))))
+             (pam-service
+              (inherit pam)
+              (auth (cons sufficient (pam-service-auth pam)))
+              (account (cons sufficient (pam-service-account pam)))
+              (password (cons sufficient (pam-service-password pam)))
+              (session (cons sufficient (pam-service-session pam)))))
+           pam)))
 
-(define %metznet-nslcd-config (nslcd-configuration
-                                (base "dc=metznet,dc=ca")
-                                (log '("/var/log/nslcd" debug))
-                                (pam-services pam-service-list)
-                                (filters (list '(group "(objectClass=posixGroupAux)")))
-                                (binddn (or (getenv "LDAP_BINDDN") ""))
-                                (bindpw (or (getenv "LDAP_BINDPW") ""))
-                                (uri (list "ldap://ldap.metznet.ca"))))
+
+(define (sssd-pam-services config)
+  (list (sssd-pam-service config)))
+
+(define (sssd-shepherd-service config)
+  (list (shepherd-service
+          (documentation "")
+          (provision '(sssd))
+          (requirement '(networking user-processes))
+          (start #~(make-forkexec-constructor
+                     (list (string-append #$(sssd-configuration-sssd config) "/sbin/sssd") "-i" "-d" "0x77f0")
+                     #:user "root"
+                     #:group "root"
+                     #:environment-variables
+                     (list (string-append "LD_LIBRARY_PATH=" #$(sssd-configuration-sssd config) "/lib"))))
+          (stop #~(make-kill-destructor)))))
+
+(define %sssd-activation
+    #~(begin
+        (let ((dbdir "/var/lib/sss/db")
+              (dbusdir "/var/lib/sss/pipes/private")
+              (user (getpw "root")))
+          (mkdir-p/perms dbusdir user #o755)
+          (mkdir-p/perms dbdir user #o755)
+          (chmod "/etc/sssd/sssd.conf" #o600))))
+
+(define (sssd-etc-service config)
+  `(("sssd/sssd.conf" ,(sssd-configuration-config config))))
+
+(define sssd-service-type
+  (service-type
+    (name 'sssd)
+    (description "MetzNet SSSD Service")
+    (extensions
+      (list (service-extension pam-root-service-type sssd-pam-services)
+            (service-extension dbus-root-service-type
+                                          (compose
+                                           list
+                                           sssd-configuration-sssd))
+            (service-extension etc-service-type sssd-etc-service)
+            (service-extension activation-service-type (const %sssd-activation))
+            (service-extension nscd-service-type (const (list sssd)))
+            (service-extension shepherd-root-service-type sssd-shepherd-service)))
+    (default-value (sssd-configuration))))
+
+(define pam-service-list (list "su" "gdm-password" "login" "sshd" "passwd"))
 
 (define %metznet-services
   (list
@@ -198,7 +277,7 @@
                                     (extra-content "KerberosAuthentication yes")))
     (service krb5-service-type %metznet-krb5-config)
     (service pam-krb5-service-type (pam-krb5-configuration (pam-krb5 pam-krb5) (minimum-uid 1000)))
-    (service nslcd-service-type %metznet-nslcd-config)
+    (service sssd-service-type)
     (service metznet-service-type pam-service-list)))
 
 (define %metznet-nscd-configuration (nscd-configuration
@@ -212,8 +291,7 @@
                                             (database 'group)
                                             (positive-time-to-live (* 3600 12))
                                             (negative-time-to-live 20)
-                                            (persistent? #t))
-)
+                                            (persistent? #t)))
                                         %nscd-default-caches))))
 
 (define %metznet-desktop-services
@@ -248,6 +326,7 @@
 (define %metznet-server-services
   (append %metznet-services
     (list
+      (dbus-service)
       (service dhcp-client-service-type)
       (openvpn-client-service
         #:config (openvpn-client-configuration