diff -Nur e-smith-base-5.2.0-old/root/etc/e-smith/locale/en-us/etc/e-smith/web/functions/remoteaccess e-smith-base-5.2.0/root/etc/e-smith/locale/en-us/etc/e-smith/web/functions/remoteaccess
--- e-smith-base-5.2.0-old/root/etc/e-smith/locale/en-us/etc/e-smith/web/functions/remoteaccess	2014-04-05 17:51:15.278940872 +0200
+++ e-smith-base-5.2.0/root/etc/e-smith/locale/en-us/etc/e-smith/web/functions/remoteaccess	2014-04-06 10:27:07.542188253 +0200
@@ -48,6 +48,10 @@
 	<trans>Number of PPTP clients</trans>
     </entry>
     <entry>
+	<base>NUMBER_OF_PPTP_CLIENTS_MUST_BE_LESSER_THAN_NUMBER_OF_IP_IN_DHCP_RANGE</base>
+	<trans>The number of pptp clients is greater than the number of reserved IP for DHCP. You should take a smaller number.</trans>
+    </entry>
+    <entry>
         <base>LABEL_SSH_PORT</base>
         <trans>TCP Port for secure shell access</trans>
     </entry>
diff -Nur e-smith-base-5.2.0-old/root/etc/e-smith/web/functions/remoteaccess e-smith-base-5.2.0/root/etc/e-smith/web/functions/remoteaccess
--- e-smith-base-5.2.0-old/root/etc/e-smith/web/functions/remoteaccess	2014-04-05 17:51:15.278940872 +0200
+++ e-smith-base-5.2.0/root/etc/e-smith/web/functions/remoteaccess	2014-04-06 09:20:55.799381623 +0200
@@ -113,7 +113,7 @@
 
         <subroutine src="show_ipsecrw_section()"/>
 
-  	<field type="text" id="pptpSessions" size="3" validation="zero_or_positive()"
+  	<field type="text" id="pptpSessions" size="3" validation="zero_or_positive(), pptp_and_dhcp_range ()"
 	    value="get_pptp_sessions()">
 	    <label>LABEL_PPTP</label>
 	    <description>DESC_PPTP</description>
diff -Nur e-smith-base-5.2.0-old/root/usr/lib/perl5/site_perl/esmith/FormMagick/Panel/remoteaccess.pm e-smith-base-5.2.0/root/usr/lib/perl5/site_perl/esmith/FormMagick/Panel/remoteaccess.pm
--- e-smith-base-5.2.0-old/root/usr/lib/perl5/site_perl/esmith/FormMagick/Panel/remoteaccess.pm	2014-04-05 17:51:15.298943308 +0200
+++ e-smith-base-5.2.0/root/usr/lib/perl5/site_perl/esmith/FormMagick/Panel/remoteaccess.pm	2014-04-06 10:25:12.267521705 +0200
@@ -31,6 +31,7 @@
 use File::Basename;
 use Exporter;
 use Carp;
+use Socket qw( inet_aton );
 
 our @ISA = qw(esmith::FormMagick Exporter);
 
@@ -40,7 +41,7 @@
 		show_valid_from_list add_new_valid_from remove_valid_from
 		validate_network_and_mask ip_number_or_blank subnet_mask_or_blank
 		show_telnet_section get_serial_console show_ftp_section
-		get_ipsecrw_sessions show_ipsecrw_section
+		get_ipsecrw_sessions show_ipsecrw_section pptp_and_dhcp_range
 );
 
 
@@ -370,6 +371,36 @@
 
 =pod
 
+=head2 pptp_and_dhcp_range
+
+Validate the input of pptp session if it is not superior than the maximum number of ip between dhcpd_start and dhcpd_end
+
+=cut
+
+sub pptp_and_dhcp_range
+{
+  my $self = shift;
+  my $val = shift || 0;
+  my $dhcp_status     = $db->get_prop('dhcpd','status') || 'disabled';
+  my $dhcp_end        = $db->get_prop('dhcpd','end') || '';
+  my $dhcp_start      = $db->get_prop('dhcpd','start') || '';
+
+    if ( $dhcp_status eq 'enabled' )
+        {
+        my $ip_start     = unpack 'N', inet_aton($dhcp_start);
+        my $ip_end       = unpack 'N', inet_aton($dhcp_end);
+        my $ip_count     = $ip_end - $ip_start;
+        return 'OK' if( $val < $ip_count );
+        return $self->localise('NUMBER_OF_PPTP_CLIENTS_MUST_BE_LESSER_THAN_NUMBER_OF_IP_IN_DHCP_RANGE');
+        }
+    else
+        {
+        return 'OK';
+        }
+}
+
+=pod
+
 =head2 _get_valid_from
 
 Reads the ValidFrom property of config entry httpd-admin and returns a list