Broadband connection sharing?

ARGINITE

I want to share a broadband connection between afew box using a usb modem using a linux box.
Any pointers on how to using slackware?

dahamsta

Generic answer but...

First Google for Linux drivers for your modem using Google Linux. If you find some, check the README and INSTALL file for info on sharing, if it can be done they'll likely mention it there. They'll probably also give you basic details on setting up a DHCP daemon, which you'll use to assign IP addresses to your LAN machine(s).

If you can't find linux drivers for the modem I'm afraid you'll have to share your connection via a Windows box. Or buy a router. Hmmm, I probably should have said that first...

adam

nadir

you want to have netfilter compiled into the kernel (yes thats a whole lot of stuff under netfilter, select it all or read a proper guide on it, it's probably built in automatically on slack though) on the linux router.
you could set up a dhcpcd server like dahamsta said, to assign ip's automatically, or you could assign them manually,
you will then need to enable ip masquerading on the router,

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

and add a default route from each client to the router.
so if you had setup an ethernet conn on the server like

iface_eth0="192.168.0.1 broadcast 192.168.0.255 netmask 255.255.255.0"

you would add a default gateway route to that machine from the clients

route add default gw 192.168.0.1

thats very basic, but you get the idea.

ARGINITE

thanks for the help!
you couldnt point me in the direction of a linux how to on this subject, im not the most proficient in this whole area!

Capt'n Midnight

I always forget which file to modify in init.d to get the ip_forward to happen on next boot.


If you are not familiar with Linux you would be better off trying one of the routers out there that have nat / firewall / dhcp server - but very few have USB drivers.

I'd reckon your biggest problem will be getting a driver for the modem - ethernet ADSL units are not that much more expensive and if you get one with four network ports chances are it will have a basic firewall and DHCP built in.

You should also look at setting up Squid (or SquidNT) as this can control internet access and save bandwidth by caching.

ARGINITE

thanks for all the help

tomk

ARGINITE wrote:

you couldnt point me in the direction of a linux how to on this subject

Click here.

Capt'n Midnight wrote:

I always forget which file to modify in init.d to get the ip_forward to happen on next boot.

Depends on the distro, Capt, e.g. in Debian you edit /etc/network/options to say

ip_forward=yes

ARGINITE

thanks tomk