Setting up a gateway

DarrylMillar · n00b Joined: 11 Aug 2003 Posts: 12

Okay, I'll explain what I need to do, and I'm hoping that there is someone out there who can tell me what I need, and if possible how to set it up.

I have a computer running gentoo that connects to the internet on eth0. It has another NIC in it at eth1. I want eth1 to be used to create a basic router. I'll also need to map a few ports to the outside world.

The other thing I want to setup is an internal domain. There will be 3 computers behind it, and I want to name each one, and put them on a domain name that is not actually registered.

I know how to do all these things on Windows with RRAS and the DNS service and nice quick and easy GUI tools

I'm just going to install gentoo on it tonight using the new 2 LiveCD set. So, if someone can help me out, I would be very very appreciative.

Thank you in advance.

slartibartfasz · Posted: Mon Aug 11, 2003 9:47 pm Post subject:

for a real quick way to do this with linux take a look at coyote linux... or simialr distributions..

if u want to do this with gentoo - u will have to do some reading - but basically u need to 'emerge dhcp', 'emerge iptables' compile NAT (aka masquerading) into your kernel and set up NAT with the iptables...
_________________
To an engineer the glass is neither half full, nor half empty - it is just twice as big as it needs to be.

DarrylMillar · n00b Joined: 11 Aug 2003 Posts: 12

Hmm, okay, well the gateway computer will recieve some light use as an internet browsing computer

or else I would use Coyote Linux.

Does the new LiveCD's GenKernel utility compile Masquerading into the kernel or as a module by default?

slartibartfasz · Posted: Mon Aug 11, 2003 10:06 pm Post subject:

DarrylMillar · n00b Joined: 11 Aug 2003 Posts: 12

Alright, but, I'm just curious now, does the Gentoo-Source package contain the IPTABLES and whatnot sources within? And I can simply activate them for compilation with the 'make menuconfig' command?

Basically, I guess I'm asking if Gentoo-Sources is MASQ ready.

slartibartfasz · Posted: Mon Aug 11, 2003 10:28 pm Post subject:

dont know exactly about the live cds but iptables is a standard prog - i bet its there - if not u can download it...

u are mixing up two things...

'make menuconfig' lets u choose things the kernel of your system should be able to do... to use it, u need the programm iptables...

an example - u compile support for hmm - usb into the kernel - u will still need some tools to actuall use the kernel support - the kernel itself just provides the possibility - hope this clears it up a little bit...

if this is your very first time with linux, i have to warn you: gentoo is not for the faint of heart

- it can get pretty tough if u dont know your way in linux, but for most people the install guide works without problems - i guess its a question of luck and how much time u have...

[EDIT] short version:

yes gentoo is MASQ ready - you are in the linux world - u can if u want to

_________________
To an engineer the glass is neither half full, nor half empty - it is just twice as big as it needs to be.

DarrylMillar · n00b Joined: 11 Aug 2003 Posts: 12

No, this is not my first time with linux, I've been using Gentoo for a while, and other distros before, but this is my first time trying to do this.

The gentoo install works perfectly, I'm just wondering what I need to do extra to setup MASQ.

Okay, It appears I'm confusing myself as well as you. lol...

I should emerge iptables before I compile my kernel? Is this what you're saying?

I'm at the stage in the install where it comes time to build the kernel.

What I'm wondering is: should I complete the install and get the system running, then worry about IPTABLES, or is this something that I should do during the initial install... Installing IPTABLES, I mean

DarrylMillar · n00b Joined: 11 Aug 2003 Posts: 12

Okay, this is what I've done. In the CHROOT the Gentoo install uses, I emerged gentoo-sources, then iptables. In the menuconfig, I enabled all the options that Gentoo needs, as well as all of the ones that the NAT/MASQ howto needs. It's compiling as of now.

slartibartfasz · Posted: Tue Aug 12, 2003 5:40 am Post subject:

great - next thing is configuring the forwarding - there are some threads here in the forums i think, or you could proceed to follow the tldp guide - if u got this, set up the dhcp server, so that your internal boxes get an ip and you are finished

_________________
To an engineer the glass is neither half full, nor half empty - it is just twice as big as it needs to be.

Eriador · Posted: Sat Aug 16, 2003 10:36 pm Post subject:

if i set a computer up in this manner, will i be able to control how the bandwith are distributed between the client computers?

Mvh Eriador

Eriador · Posted: Sun Aug 17, 2003 3:17 am Post subject:

just ignore that....
seems my question doesn't belong here, found som info though

http://www.tldp.org/HOWTO/Bandwidth-Limiting-HOWTO/index.html

Mvh Eriador