Internet sharing not working

[IceDigger]

Using the latest PCLinux OS, LXDE, with 2 realtek adapters.

Trying to setup internet sharing on my PCLinuxOS machine in PCC and it keeps saying "no ethernet network adapter configured for lan has been detected on your system"

I already configured eth0 manually for the internet connection and have eth1 as dhcp.

I have comcast router going into eth0, and eth1 going into a gigabit switch which I will connect the other computers to.

[pupthai]

If you have a router why are you sharing the connection. plug the switch into the router and your pc's into the switch.

[IceDigger]

That is the way I would like to do it.

[pupthai]

OK    something in here might help

https://wiki.archlinux.org/index.php/Ad-hoc_networking

[muungwana]

what does these commands give you?

ifconfig

cat /proc/sys/net/ipv4/ip_forward

[IceDigger]

here is ifconfig

eth0      Link encap:Ethernet  HWaddr 00:E0:4C:77:98:29 
          inet addr:50.73.221.217  Bcast:50.73.221.223  Mask:255.255.255.248
          inet6 addr: fe80::2e0:4cff:fe77:9829/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:34390 errors:0 dropped:0 overruns:0 frame:0
          TX packets:25353 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:43101466 (41.1 MiB)  TX bytes:13578791 (12.9 MiB)
          Interrupt:20 Base address:0x6c00

eth1      Link encap:Ethernet  HWaddr 00:1E:2A:D6:20:1B 
          inet6 addr: fe80::21e:2aff:fed6:201b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:59 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:10000 (9.7 KiB)
          Interrupt:21 Base address:0x8800

eth1:9    Link encap:Ethernet  HWaddr 00:1E:2A:D6:20:1B 
          inet addr:127.255.255.255  Bcast:127.255.255.255  Mask:255.0.0.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:21 Base address:0x8800

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:16 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1260 (1.2 KiB)  TX bytes:1260 (1.2 KiB)

cat /proc/sys/net/ipv4/ip_forward comes back with a 0

[muungwana]

open the terminal and then log into root's account.

run this command

echo 1 > /proc/sys/net/ipv4/ip_forward

The above command will allow traffic to flow from one interface to another.

then run this command

iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE

The above command will hide all traffic from your local network eth1 is connected to.

Now, go to pcc and then give eth1 a static IP address and you should be good to go.
i would give eth1 the following network properties.

IP address: 10.10.10.1
netmask  : 255.255.255.0

Other options are not necessary and dont mind if pcc compain about anything.

set your other computer's to have IP addresses btw 10.10.10.2 and 10.10.10.154 and a gateway address of "10.10.10.1" and you should be good to go.

You can make up your own numbers if you know what you are doing. Above numbers are there for your convenience.

The settings wont survive reboot, will talk about that when things are set.

[IceDigger]

Thank you for the help.  I will try it when I get into work tomorrow.

Whats a way to make it permanent?

[muungwana]

service iptables save

The above command will save the rule to iptables configuration file making the rule survive reboot.
Just set in pcc iptables to start at boot time

open "/etc/sysctl.conf" and then add the following line

net.ipv4.ip_forward = 1

make sure you do not have a duplicate line with assignment of 0

[IceDigger]

That worked great!

Thank you!