ip masquerade
naxis
naxis at valiansys.com
Thu Jan 20 15:30:07 UTC 2005
these are some details about my network.
I'm trying to to share the internet with a linux machine.
I can communicate with skypie but cannot surf the net and connot chat
messengers.
Network
eth0 get dynamic ip address from the router(192.168.11.4)
eth1 FC3 local dhcp server (IP:192.168.1.1 GW:eth0)
"ifconfig"gives
eth0 Link encap:Ethernet HWaddr 00:01:80:31:44:B9
inet addr:192.168.11.4 Bcast:192.168.11.255 Mask:255.255.255.0
inet6 addr: fe80::201:80ff:fe31:44b9/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:45822 errors:0 dropped:0 overruns:0 frame:0
TX packets:39918 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5477428 (5.2 MiB) TX bytes:4769221 (4.5 MiB)
Interrupt:11 Base address:0xe400
eth1 Link encap:Ethernet HWaddr 00:90:99:33:4C:DF
inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::290:99ff:fe33:4cdf/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:45972 errors:0 dropped:0 overruns:0 frame:0
TX packets:38004 errors:0 dropped:0 overruns:0 carrier:0
collisions:18 txqueuelen:1000
RX bytes:5369348 (5.1 MiB) TX bytes:5827700 (5.5 MiB)
Interrupt:10 Base address:0xdc00
I run
iptables -t nat -A POSTROUTING -o eth0 -s 192.168.1.0/24 -j MASQUERADE
I edited /etc/sysctl.conf setting
net.ipv4.ip_forward = 1
and run "sysctl -p"(advices I saw on this mailing list)
"iptables -L -n -t nat" shows this for the POSTROUTING:
Chain POSTROUTING (policy ACCEPT)
target prot opt source destination
MASQUERADE all -- 192.168.1.0/24 0.0.0.0/0
"route -n" gives
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
192.168.11.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1
0.0.0.0 192.168.11.1 0.0.0.0 UG 0 0 0 eth0
I can communicate with skypie so I think the internet sharing is OK but
I cannot surf the net and cannot communicate with messengers
Alexander,Remi and Christopher I need your help.
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