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- - in one nic and out the other (https://www.linuxquestions.org/questions/linux-networking-3/in-one-nic-and-out-the-other-4175445418/)

mayhew

01-13-2013 12:27 PM

in one nic and out the other

I have a linux mint 14 cinimon os and am trying to route the internet through my system. my eth0 is inbound 1000mbit ethernet, and my eth1 is a 100mbit nic planned for outbound. I am trying to setup my system to serve the net out to eth1 so i can atach 2 laptops via a switch, get internet to install gentoo.

I tried the following tutorial( http://comtech247.net/2012/01/03/how...linux-mint-12/ ) but can't get the service to start. i think im mising somthing important.

I want the most distro nuteral meathod possable (learn it once...) but if there is a linux mint spicific way thats easier, thats fine by me.

Thanks ^.^
Fen

kbp	01-13-2013 04:55 PM

Here's my response to a similar question which should work on pretty much any linux system .. http://www.linuxquestions.org/questi...em-4175421004/

mayhew

01-14-2013 05:52 PM

the very last command

Code:

iptables-save > /etc/sysconfig/iptables

results in a no such file/dir output. i think linux mint may store the tables elsewhere, or i am missing somthing. everythign else resulted in no errors. the only change needed was swaping eth0 for eth1 (my 0 connects to the router) i have saved the steps as a bash script for later use.

no internet connection is found on systems atached to eth1, any advice for dhcp setup. i tried once ( link to tutorial http://linux.bihlman.com/2012/learn-...linux-mint-12/ ) and the changes required booting from another system to fix.

thanks again for your help so far.

Fen

kbp	01-15-2013 02:04 AM

If you take a look at the init script for iptables you should find where the rules are stored to be reinstated at boot.

Here's an example /etc/dhcpd.conf you can adjust as necessary:

Code:

ddns-update-style interim;



allow booting;

allow bootp;



ignore client-updates;

set vendorclass = option vendor-class-identifier;



subnet 192.168.0.0 netmask 255.255.255.0 {

    option routers            192.168.0.1;

    option domain-name-servers 192.168.0.1;

    option subnet-mask        255.255.255.0;

    range dynamic-bootp        192.168.0.100 192.168.0.200;

    default-lease-time        21600;

    max-lease-time            43200;

}

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