diff --git a/gestion/classe_firewall.py b/gestion/classe_firewall.py
index 59869ea6..8b3d36ee 100755
--- a/gestion/classe_firewall.py
+++ b/gestion/classe_firewall.py
@@ -20,9 +20,9 @@ import iptools,config,fileinput
 from ldap_crans import *
 from config_firewall import *
 from affich_tools import *
-def test(fredgroscon):
-    print fredgroscon
-    os.system(fredgroscon)
+def test(pouet):
+    print pouet
+    os.system(pouet)
 
 class ErrorArgument(Exception):
     """
@@ -115,7 +115,8 @@ class firewall:
                 chaine=tmp[1]
                 count=0
             if ip in line:
-                os.system("iptables -D %s  %i"%(chaine,count))
+		os.system("iptables -L")
+                test("iptables -D %s  %i"%(chaine,count))
 		count=count-1
         os.system("rm -f /tmp/firewall")
                   
@@ -349,31 +350,31 @@ class firewall:
         wifi=False
         while (i<len(config.NETs['wifi'])):
             if (iptools.AddrInNet(ip,config.NETs['all'][i])):
-                os.system("iptables -I PREROUTING  -s %s -m mac --mac-source "%ip+\
+                test("iptables -t nat -I PREROUTING -s %s -m mac --mac-source "%ip+\
                 "%s -j ACCEPT"%config.mac_wifi)
                 wifi=True
             i=i+1
         if (not wifi):
-            os.system("iptables -I PREROUTING -s %s -m mac --mac-source %s -j ACCEPT"%\
+            test("iptables -t nat -I PREROUTING -s %s -m mac --mac-source %s -j ACCEPT"%\
                   (ip,search[0].mac()))
         if search[0].portTCPin()!='':
             ports=search[0].portTCPin()
             for j in ports.split(' '):
-                os.system("iptables -I ADHERENTS_INPUT -d %s"%ip+\
+                test("iptables -I ADHERENTS_INPUT -d %s"%ip+\
                       " -p tcp --dport %s -j ACCEPT"%j)
         if search[0].portTCPout()!='':
             ports=search[0].portTCPout()
             for j in ports.split(' '):
-                os.system("iptables -I ADHERENTS_OUTPUT -d %s"%ip+\
+                test("iptables -I ADHERENTS_OUTPUT -d %s"%ip+\
                       " -p tcp --dport %s -j ACCEPT"%j)
         if search[0].portUDPin()!='':
             ports=search[0].portUDPin()
             for j in ports.split(' '):
-                os.system("iptables -I ADHERENTS_INPUT -d %s"%ip+\
+                test("iptables -I ADHERENTS_INPUT -d %s"%ip+\
                       " -p udp --dport %s -j ACCEPT"%j)
         if search[0].portUDPout()!='':
             ports=search[0].portUDPout()
             for j in ports.split(' '):
-                os.system("iptables -I ADHERENTS_OUTPUT -d %s"%ip+\
+                test("iptables -I ADHERENTS_OUTPUT -d %s"%ip+\
                       " -p udp --dport %s -j ACCEPT"%j)