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how to share an ADSL connection to four computers with different OS systems?

N

nguyenminhtung

Banned
Hi all
Yeah, I got a trounble with it, I got one router Linksys model BEFSR41 used to connect ADSL modem to the router, but I don't know if I should connect it as WAN or Uplink. If I connet into Wan then only Windows system can use internet, Linux system can't. But if I connect it as Uplink then only Linux sstem can use internet and the rest of it can't. Please help
Any suggestion would be appreciated
( one use Redhat 7.1, one is win2k, one is WinNT and one is Win2002 ADS
 
You've got alot more work to do. 😉

You need to somehow enable NAT (Network Address Translation), either on 1 machine that will act as a gateway for your other machines -OR- enable it at your cable router. This is UNLESS you have ISP-assigned, valid, routable IP addresses for EVERY SINGLE ONE of your machines.

Unfortunately, I am not familiar with the workings of these cable routers since I don't use one (I have a dedicated firewall machine between my hubs inside and the 'net, so I don't know how you would enable NAT on one (if it is possible to do at all). Alternately, your Linux can act as a NAT/gateway for your other machines (by enabling IP forwarding in the kernel and doing a few other things), and you can setup firewalling rules for you network. Alternately, your XP (2002) server should have ICS on it to be able to do the same. BUT...IMHO, I would NOT put XP out there facing the internet - mainly because from what I've read, there are no Code Red patches for XP yet.
 
Actually, all OSes since 98 (including 98) have had ICS, but I agree that putting a windows amchine towards the net when you could put a linux one is a bad idea. I use linux for my firewall as well. I have NAT setup and everything works fine, got a 2000 machine and a 98 machine running behind the firewall.
 
Actually, all OSes since 98 (including 98) have had ICS

As much as I have been putzing with 98 for the past several years, I'm curious about where it is. Is it something that you install separately? I never thought that one could multihome 98 like you can NT/2K/XP, but apparently people here are purportedly running 2 NICs in 98SE machines and somehow doing this.
 
Honestly, i couldn't even tell ya where to look... it's been at least a year since i ran 98 and i would NEVER consider running such a service on such an inferior OS... I'd run it on NT or 2k, but i'm pretty content with linux.

But i know it's possible
 
OK.. I'll give this a go. Routers work at the network level - they really don't care what the OS is on your machine, so it doesn't really matter - It's all in the setup.

Your cable modem port goes in the WAN port. You then need to setup your router with the IP address assigned by the ISP (or set it to "obtain IP address automatically&quot😉. Also put in the DNS servers given to you by the ISP.

Next, connect all the rest of your machines to the router, turn them on and make sure you get link lights for all of them.

There's a built-in DHCP server in the Linksys. Make sure this is enabled. By default, it's going to hand out IP addresses in the 192.168.0.x network. Set all your windows PC's to "obtain an address automatically" and they should start to work.

The Linux box might be a bit trickier. I know they can do DHCP but I've never done it. If you can figure that out, great. If you can't, give it an IP address if 192.168.0.250, SM 255.255.255.0 default gateway 192.168.0.1 and the DNS servers used by your ISP.

Everything should then work and all the machine should be able to browse.

- G
 
The Linux box might be a bit trickier. I know they can do DHCP but I've never done it.

With the newest versions of the different distros, dhcpcd should be there. Using some of the newer utilities for configuring the network to do a dhcp request, should configure it automatically.
 
If this is the 1 port router you need to get either a hub or switch, if it is the 4 port router you should be all set... JUST RTM! All the info you need is int he manual on how to setup your network to use the box...
 


<< Actually, all OSes since 98 (including 98) have had ICS >>



Actually, the first version of 98 does not have ICS. It wasn't provided until 98SE.



<< By default, it's going to hand out IP addresses in the 192.168.0.x network. >>



The Linsys uses 192.168.1.x addresses. The gateway (router itself) is 192.168.1.1, with the first default assigned address being .100.

nguyenminhtung,

Do you have linuxconf installed on your Redhat box? If so, open it up and go in to Networking/Basic Host Information/Adapter 1 and check DHCP. Delete any IP addresses that are appearing, save the changes and, assuming communication is working, it will grab an IP off the router.

Russ, NCNE




 
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