diff --git a/domain.yml b/domain.yml
index c92dac3..594651c 100644
--- a/domain.yml
+++ b/domain.yml
@@ -7,6 +7,10 @@ servernetmask: 255.255.255.0
 servernet: 172.16.254.0
 servergw: 172.16.254.1
 serverfqdn: pdc.topolin.ia
+wan0mode: dhcp 
+wan0ip: dhcp
+wan0netmask: dhcp 
+wan0gateway: dhcp
 domainshort: TOPOLIN
 domainfull: topolin.ia
 dhcprange_start: 172.16.254.10
@@ -29,3 +33,6 @@ mirror_host: it.archive.ubuntu.com
 #mirror_security_path: /ubuntu
 client_gitbranch: master
 #client_gitrepo: "https://github.com/bglug-it/client-pull-installation.git"
+client_admin_username: bglug
+client_admin_fullname: BGLUG User
+client_admin_crypted_password: $6$S8u22loyR$RJZUtmnqmadvas13BxjPkBjdcF1o6P0xGtweZ9MkUCKIbyzmzQFxvwPTwoX1AaPgRyNmvdevyUgs/AMRGH8O./
diff --git a/how_to_change_passwords.md b/how_to_change_passwords.md
index 2a4190d..d73da4e 100644
--- a/how_to_change_passwords.md
+++ b/how_to_change_passwords.md
@@ -34,16 +34,11 @@ Open up the file `roles/init/tasks/mgmtuser.yml`, find out `password:` and then
 
 ## *bglug* user (client side but preseeded) ##
 
-The definition of password for *bglug* is inside `*.seed` files, inside [`server-config`][1]. Create a new password hash with:
+Create a new password hash with:
 
 	$ mkpasswd -m sha-512
 
-Copy the hash in your clipboard; clone the repository, then in the working directory:
-
-	$ find . -iname \*.seed -exec $EDITOR {} \;
-	
-Within each `*.seed` file, search for the string `user-password-crypted` string and change following hash.
-
+Copy the hash after the colon of the option client_admin_crypted_password in `domain.yml`.
 ## *admin* user (domain valid) ##
 
 Password must be specified within NethServer interface for the *admin* user and must be absolutely equal to the one contained inside vault file.
diff --git a/roles/nethcfg/tasks/network.yml b/roles/nethcfg/tasks/network.yml
index e8ffb29..fa9dc97 100644
--- a/roles/nethcfg/tasks/network.yml
+++ b/roles/nethcfg/tasks/network.yml
@@ -1,8 +1,13 @@
 ---
 # Reconfiguring network interfaces
 
-- name: Configuring external NIC
+- name: Configuring external NIC (dhcp)
   shell: /sbin/e-smith/db networks setprop {{ extnic }} role red bootproto dhcp 
+  when: ansible_local.domain.wan0mode == "dhcp"
+
+- name: Configuring external NIC (static)
+  shell: /sbin/e-smith/db networks setprop {{ extnic }} role red bootproto none ipaddr {{ ansible_local.domain.wan0ip}} netmask {{ ansible_local.domain.wan0netmask }} gateway {{ ansible_local.domain.wan0gateway }}
+  when: ansible_local.domain.wan0mode == "static"
 
 - name: Configuring internal NIC
   shell: /sbin/e-smith/db networks setprop {{ intnic }} role green ipaddr {{ ansible_local.domain.serverip }} netmask {{ ansible_local.domain.servernetmask }}
diff --git a/roles/preseed/templates/preseed/aula-trusty.seed b/roles/preseed/templates/preseed/aula-trusty.seed
index a8a2d0a..c6e7588 100644
--- a/roles/preseed/templates/preseed/aula-trusty.seed
+++ b/roles/preseed/templates/preseed/aula-trusty.seed
@@ -64,9 +64,9 @@ d-i	clock-setup/ntp				boolean true
 d-i	clock-setup/ntp-server			string {{ ansible_local.domain.ntpserver }}
 
 # User creation
-d-i	passwd/user-fullname			string BgLUG User
-d-i	passwd/username				string bglug
-d-i	passwd/user-password-crypted		password $6$S8u22loyR$RJZUtmnqmadvas13BxjPkBjdcF1o6P0xGtweZ9MkUCKIbyzmzQFxvwPTwoX1AaPgRyNmvdevyUgs/AMRGH8O./
+d-i	passwd/user-fullname			string {{ ansible_local.domain.client_admin_fullname }}
+d-i	passwd/username				string {{ ansible_local.domain.client_admin_username }}
+d-i	passwd/user-password-crypted		password {{ ansible_local.domain.client_admin_crypted_password }}
 
 # Partitioning
 d-i	partman-auto/init_automatically_partition	select biggest_free
diff --git a/roles/preseed/templates/preseed/client-trusty.seed b/roles/preseed/templates/preseed/client-trusty.seed
index e6341b9..54a0240 100644
--- a/roles/preseed/templates/preseed/client-trusty.seed
+++ b/roles/preseed/templates/preseed/client-trusty.seed
@@ -64,9 +64,9 @@ d-i	clock-setup/ntp				boolean true
 d-i	clock-setup/ntp-server			string {{ ansible_local.domain.ntpserver }}
 
 # User creation
-d-i	passwd/user-fullname			string BgLUG User
-d-i	passwd/username				string bglug
-d-i	passwd/user-password-crypted		password $6$S8u22loyR$RJZUtmnqmadvas13BxjPkBjdcF1o6P0xGtweZ9MkUCKIbyzmzQFxvwPTwoX1AaPgRyNmvdevyUgs/AMRGH8O./
+d-i	passwd/user-fullname			string {{ ansible_local.domain.client_admin_fullname }}
+d-i	passwd/username				string {{ ansible_local.domain.client_admin_username }}
+d-i	passwd/user-password-crypted		password {{ ansible_local.domain.client_admin_crypted_password }}
 
 # Partitioning
 d-i	partman-auto/init_automatically_partition	select biggest_free
diff --git a/roles/preseed/templates/preseed/docenti-trusty.seed b/roles/preseed/templates/preseed/docenti-trusty.seed
index 37f0967..e5c7af6 100644
--- a/roles/preseed/templates/preseed/docenti-trusty.seed
+++ b/roles/preseed/templates/preseed/docenti-trusty.seed
@@ -64,9 +64,9 @@ d-i	clock-setup/ntp				boolean true
 d-i	clock-setup/ntp-server			string {{ ansible_local.domain.ntpserver }}
 
 # User creation
-d-i	passwd/user-fullname			string BgLUG User
-d-i	passwd/username				string bglug
-d-i	passwd/user-password-crypted		password $6$S8u22loyR$RJZUtmnqmadvas13BxjPkBjdcF1o6P0xGtweZ9MkUCKIbyzmzQFxvwPTwoX1AaPgRyNmvdevyUgs/AMRGH8O./
+d-i	passwd/user-fullname			string {{ ansible_local.domain.client_admin_fullname }}
+d-i	passwd/username				string {{ ansible_local.domain.client_admin_username }}
+d-i	passwd/user-password-crypted		password {{ ansible_local.domain.client_admin_crypted_password }}
 
 # Partitioning
 d-i	partman-auto/init_automatically_partition	select biggest_free