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Subject: Re: [newbie] LAN/firewall setup Date: Fri, 3 Jan 2003 18:06:36 -0600 From: Dennis Myers <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] On Friday 03 January 2003 05:43 pm, you wrote: > On Sat, 2003-01-04 at 09:45, Dennis Myers wrote: > > Stephen, do you have to use a crossover cat 5 cable between the switch > > and the firewall/router? When I make my cable connections like you show > > I can not connect to the internet with a client machine. If I have the > > eth1 and eth0 from the firewall into the switch with one of them set to > > the port linked to uplink position and the other in a normal port on the > > switch then the other comps can connect using 192.168.0.1 as the gateway. > > This is really puzzling me. > > Ok...so then you actually have a "hardware" firewall, ya? > > In my configurations, I have a straight cat5 from the ISP's box (ADSL > modem) to the linux box. The linux box uses DHCP to obtain it's IP addy > from the ISP. > > Firewalling is turned on on the linux box (hand-configured, the plain > ol' firealling via either ipchains or iptables). IP masquerading via NAT > is turned on. The second NIC in this box is set to 192.168.0.1 - the > rest of the machines are hence after that. The client machines use the > 192.168.0.1 as the gateway AND the primary DNS with the secondary DNS > set to the ISP's primary DNS. > > The cat5 for the second NIC goes into the 10/100 switch, and the server > and clients all are on that switch. > > Now if I'm reading ya right, you got your client machines and your linux > box all hangin offa switch (hardware?)... Right, the firewall box is stand alone with two NICs and all the other client boxes are connected into the switch. However when I run one of the firewall NICs to the switch and the other to the cable modem I can ping internet with the firewall box but none of the clients can. So what I have right now is both Firewall NICs running into the switch and the uplink on the switch going to the cable modem. I know this will end up with me saying "DUHHHHH! I should have seen the answer". Hope this made my setup a little clearer. -- Dennis M. linux user # 180842 ------------------------------------------------------- I keep forgetting to set to newbie -- Dennis M. linux user # 180842
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