iptables NAT for sharing net

Hello friends!


i have two ethernet card with my pc.

one is connected with ethernet modem for internet. (eth0 -a.b.c.d)

another one is connected with laptop.(eth1 w.x.y.z)

my isp provider gave dns address and my ethernet modem set as
192.168.1.2 for connectivity to system and it will get the dynamic ip
address from the isp.

i want share the net with my laptop.

what is the iptables NAT command for transfer the data among eth0 and
eth1?
what is the command for ip masqureading?

regards
bala

On Sun, 14 May 2006 07:41:54 -0700, balavignesh wrote:

> Hello friends!
>
>
> i have two ethernet card with my pc.
>
> one is connected with ethernet modem for internet. (eth0 -a.b.c.d)
>
> another one is connected with laptop.(eth1 w.x.y.z)
>
> my isp provider gave dns address and my ethernet modem set as 192.168.1.2
> for connectivity to system and it will get the dynamic ip address from the
> isp.
>
> i want share the net with my laptop.
>
> what is the iptables NAT command for transfer the data among eth0 and
> eth1?
> what is the command for ip masqureading?
>
> regards
> bala

Hi.

I propose a look at a program called FireStarter.

It is a program designed to ease the building of firewalling rules.
It also have a windows where you can see the hits on your firewall.

Site :

http://www.fs-security.com/

Hope it help

You could just build a bridge that connects you laptop to the
gateway(192.168.1.2) trough your PC. That is if your laptop and PC have
192.168.1.xxx ip adresses.

BASH# ifconfig eth0 0.0.0.0 up
BASH# ifconfig eth1 0.0.0.0 up
BASH# brctl add br0
BASH# brctl addif br0 eth0 eth1
BASH# ifconfig br0 192.168.1.yyy

Replace yyy with the ip that your PC should have.

This works on Slackware hope it works for you

balavignesh wrote:

> Hello friends!
>
>
> i have two ethernet card with my pc.
>
> one is connected with ethernet modem for internet. (eth0 -a.b.c.d)
>
> another one is connected with laptop.(eth1 w.x.y.z)
>
> my isp provider gave dns address and my ethernet modem set as
> 192.168.1.2 for connectivity to system and it will get the dynamic ip
> address from the isp.
>
> i want share the net with my laptop.
>
> what is the iptables NAT command for transfer the data among eth0 and
> eth1?
> what is the command for ip masqureading?
>
> regards
> bala


I do that with a program named "guidedog".

Regards
ArameFarpado

On 14 May 2006, in the Usenet newsgroup comp.os.linux.networking, in article
<(E-Mail Removed) .com>, balavignesh wrote:

>what is the iptables NAT command for transfer the data among eth0 and
>eth1?
>what is the command for ip masqureading?

Hmmm... no information about what distribution - no release - not much
of anything, really.

http://ibiblio.org/pub/linux/docs/HOWTO/
http://en.tldp.org/HOWTO/HOWTO-INDEX/howtos.html

270963 Apr 12 16:13 HOWTO-INDEX
96639 Apr 12 16:13 INDEX
85507 Aug 20 2001 Firewall-HOWTO
708351 Nov 14 09:34 IP-Masquerade-HOWTO
17605 Jul 21 2004 Masquerading-Simple-HOWTO
45604 Apr 18 12:20 Networking-Overview-HOWTO
278012 Jul 23 2002 Security-Quickstart-HOWTO
71626 Apr 4 2004 Unix-and-Internet-Fundamentals-HOWTO

http://tldp.org/guides.html

Introduction to Linux - A Hands on Guide
Linux System Administration Made Easy
Securing & Optimizing Linux: The Ultimate Solution
The Linux Network Administrator's Guide, Second Edition
The Linux System Administrators' Guide

and for your future postings:

http://www.catb.org/~esr/faqs/smart-questions.html
http://groups.google.com/support/bin...y?answer=14213

Old guy

Hello friends!

Thank you for reply.......
I will try ur options and then reply the results.

Mr.moe trin, thank u for ur guide lines.
I will change my type of post.

regards

bala