sudo iptables-save
# Generated by iptables-save v1.4.4 on Tue Jan 3 19:42:09 2012
*mangle
:PREROUTING ACCEPT [26165217:2827862945]
:INPUT ACCEPT [25939960:2724126073]
:FORWARD ACCEPT [224204:103484359]
:OUTPUT ACCEPT [30498210:8485761011]
:POSTROUTING ACCEPT [30722414:8589245370]
COMMIT
# Completed on Tue Jan 3 19:42:09 2012
# Generated by iptables-save v1.4.4 on Tue Jan 3 19:42:09 2012
*nat
:PREROUTING ACCEPT [94899:4939765]
:POSTROUTING ACCEPT [55732:3360264]
:OUTPUT ACCEPT [55732:3360264]
-A POSTROUTING -s 192.168.0.0/24 ! -d 192.168.0.0/24 -j MASQUERADE
COMMIT
# Completed on Tue Jan 3 19:42:09 2012
# Generated by iptables-save v1.4.4 on Tue Jan 3 19:42:09 2012
*filter
:INPUT ACCEPT [25939960:2724126073]
:FORWARD ACCEPT [224204:103484359]
:OUTPUT ACCEPT [30498210:8485761011]
COMMIT
# Completed on Tue Jan 3 19:42:09 2012
sudo iptables -t nat -nvL
Chain PREROUTING (policy ACCEPT 94910 packets, 4940K bytes)
pkts bytes target prot opt in out source destination
Chain POSTROUTING (policy ACCEPT 55827 packets, 3366K bytes)
pkts bytes target prot opt in out source destination
194 10963 MASQUERADE all -- * * 192.168.0.0/24 !192.168.0.0/24
Chain OUTPUT (policy ACCEPT 55827 packets, 3366K bytes)
pkts bytes target prot opt in out source destination
cat /etc/network/interfaces
auto lo
iface lo inet loopback
auto eth1
iface eth1 inet static
address 192.168.0.1
netmask 255.255.255.0
auto eth2
iface eth2 inet dhcp
cat /etc/dnsmasq.conf - dnsmasq не ставили используем dns провайдера
ifconfig -a
eth1 Link encap:Ethernet HWaddr 20:cf:30:d6:f5:b4
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::22cf:30ff:fed6:f5b4/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:293674 errors:0 dropped:0 overruns:0 frame:0
TX packets:346827 errors:13 dropped:0 overruns:13 carrier:0
collisions:0 txqueuelen:1000
RX bytes:56703179 (56.7 MB) TX bytes:154150246 (154.1 MB)
Interrupt:19
eth2 Link encap:Ethernet HWaddr 00:24:8c:0b:7d:0f
inet addr:84.23.33.140 Bcast:84.23.33.143 Mask:255.255.255.248
inet6 addr: fe80::224:8cff:fe0b:7d0f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:21133298 errors:0 dropped:0 overruns:0 frame:0
TX packets:25655884 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1916820096 (1.9 GB) TX bytes:7642654811 (7.6 GB)
Interrupt:28 Base address:0x8000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:4903050 errors:0 dropped:0 overruns:0 frame:0
TX packets:4903050 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1204696889 (1.2 GB) TX bytes:1204696889 (1.2 GB)
route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
84.23.33.136 0.0.0.0 255.255.255.248 U 0 0 0 eth2
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
0.0.0.0 84.23.33.137 0.0.0.0 UG 100 0 0 eth2
cat /proc/sys/net/ipv4/ip_forward - 1
arp -n -i eth1
Address HWtype HWaddress Flags Mask Iface
192.168.0.3 ether 30:24:8c:0b:7d:0f C eth1