tolostoi@debian_joint:~$ sudo iptables -L -v -n -t nat
Chain PREROUTING (policy DROP 67057 packets, 7657K bytes)
 pkts bytes target     prot opt in     out     source               destination
    0     0 ACCEPT     0    --  lo     *       0.0.0.0/0            0.0.0.0/0
   19  1388 ACCEPT     icmp --  *      *       0.0.0.0/0            0.0.0.0/0           limit: avg 1/sec burst 5
    0     0 DROP       icmp --  *      *       0.0.0.0/0            0.0.0.0/0
  147 25728 ACCEPT     0    --  eth1   *       192.168.0.9          0.0.0.0/0           MAC 00:0D:87:B3:23:39
 2789  164K ACCEPT     0    --  eth1   *       192.168.0.10         0.0.0.0/0           MAC 00:17:31:49:14:B8
   39  2742 ACCEPT     0    --  eth1   *       192.168.0.11         0.0.0.0/0           MAC 00:E0:4C:23:40:15
  295 28080 ACCEPT     0    --  eth1   *       192.168.0.12         0.0.0.0/0           MAC 00:0F:EA:E2:40:C3
37224 3439K ACCEPT     0    --  eth1   *       192.168.0.13         0.0.0.0/0           MAC 00:13:8F:09:14:03
    0     0 ACCEPT     0    --  eth1   *       192.168.0.14         0.0.0.0/0           MAC 00:0D:87:96:53:24
    0     0 ACCEPT     0    --  eth1   *       192.168.0.16         0.0.0.0/0           MAC 00:0B:6A:1A:48:10
    0     0 ACCEPT     0    --  eth1   *       192.168.0.17         0.0.0.0/0           MAC 00:80:1E:17:88:B2
    0     0 ACCEPT     0    --  eth1   *       192.168.0.18         0.0.0.0/0           MAC 4C:00:10:50:62:34
 1042  104K ACCEPT     0    --  eth1   *       192.168.0.19         0.0.0.0/0           MAC 00:0A:E6:1F:03:B7
 5617  513K ACCEPT     0    --  eth1   *       192.168.0.21         0.0.0.0/0           MAC 00:01:6C:A5:4A:BA
    0     0 ACCEPT     0    --  eth1   *       0.0.0.0/0            0.0.0.0/0           MAC 00:19:C5:5C:60:34
    0     0 ACCEPT     0    --  eth1   *       0.0.0.0/0            0.0.0.0/0           MAC 00:0E:A6:E0:0E:B8
    0     0 ACCEPT     0    --  eth1   *       192.168.0.22         0.0.0.0/0           MAC 00:50:BF:A8:3A:6B
  172 11272 ACCEPT     0    --  eth1   *       0.0.0.0/0            0.0.0.0/0           MAC 00:0A:E6:C8:6E:D1
   42  2016 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0           tcp dpt:80 state NEW
    0     0 ACCEPT     0    --  eth1   *       0.0.0.0/0            0.0.0.0/0           MAC 00:C0:9F:4E:99:14

Chain POSTROUTING (policy ACCEPT 7 packets, 9125 bytes)
 pkts bytes target     prot opt in     out     source               destination
47307 4244K SNAT       0    --  *      eth0    0.0.0.0/0            0.0.0.0/0           to:10.81.51.85

Chain OUTPUT (policy ACCEPT 596 packets, 48316 bytes)
 pkts bytes target     prot opt in     out     source               destination