xavier [~] > ifconfig
lo        Link encap:Boucle locale
          inet adr:127.0.0.1  Masque:255.0.0.0
          adr inet6: ::1/128 Scope:Hôte
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          Packets reçus:12 erreurs:0 :0 overruns:0 frame:0
          TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:0
          Octets reçus:720 (720.0 B) Octets transmis:720 (720.0 B)

wlan0     Link encap:Ethernet  HWaddr 00:16:ce:01:42:85
          inet adr:192.168.2.106  Bcast:192.168.2.255  Masque:255.255.255.0
          adr inet6: fe80::216:ceff:fe01:4285/64 Scope:Lien
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Packets reçus:16907 erreurs:0 :0 overruns:0 frame:0
          TX packets:16905 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000
          Octets reçus:8520578 (8.5 MB) Octets transmis:2754911 (2.7 MB)

xavier [~] > iptables -L
FATAL: Error inserting ip_tables (/lib/modules/2.6.35-22-generic/kernel/net/ipv4/netfilter/ip_tables.ko): Operation not permitted
iptables v1.4.4: can't initialize iptables table `filter': Permission denied (you must be root)
Perhaps iptables or your kernel needs to be upgraded.
xavier [~] > sudo iptables -L
[sudo] password for xavier:
Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
xavier [~] >