<div><div> Reply below: </div> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Date: Sat, 28 Jan 2006 07:03:23 +0000 From: Mark <<a href="mailto:mark@lumison.net"> mark@lumison.net</a>> Subject: FC 4 Networking bridge To: For users of Fedora Core releases <<a href="mailto:fedora-list@redhat.com">fedora-list@redhat.com</a>> Message-ID: <<a href="mailto:43DB173B.3030700@lumison.net"> 43DB173B.3030700@lumison.net</a>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Hi all Perhaps I am being a lil dim here as a new linux sysadmin personage (previous preference was for windows, emphasis on "was") For some reason I have not been able to get a working network along the following lines. NOTE this network is purely for systems testing, bandwidth etc, hence the daisy chain effect. I have 2 servers, both running FC4 and a cisco router. The aim is to test throughput from one server to the other via the cisco. My proposed solution is as follows: Both servers have 2 gigE nics Cisco has 2 interfaces which I have named ciscoLan and ciscoWan Basically I want server 1 with eth0 connected to my DMZ network (and the world at large) witha public IP address I then want to configure eth1 with another public IP to connect directly to the ciscoWan I already have the cisco connected via ciscoLan to server 2 using NAT and private IPs but I cannot get eth1 on server 1 to come up with the IP address I need and then talk to the cisco. I think the issue may be that I need to enable bridging of sorts between the 2 NICs, as MS does with ICS etc. So the question is, how do I acheive that? As far as I can tell, I have all the interfaces configured correctly. I can`t give the actual IPs here, but I will give an example: All Xs give the same subnet Server 1 /etc/sysconfig/network NETWORKING=yes HOSTNAME=<a href="http://test-server-01.domain.net">test-server-01.domain.net</a> GATEWAY=X.X.X.33 /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 BOOTPROTO=none HWADDR=00:14:22:22:04:1A ONBOOT=yes TYPE=Ethernet IPADDR=X.X.X.41 NETMASK=<a href="http://255.255.255.224">255.255.255.224</a> GATEWAY=X.X.X.33 /etc/sysconfig/network-scripts/ifcfg-eth1 DEVICE=eth1 HWADDR=00:14:22:22:04:1A ONBOOT=yes TYPE=Ethernet NETMASK=<a href="http://255.255.255.224">255.255.255.224</a> IPADDR=X.X.X.42 GATEWAY=<a href="http://217.30.126.33">217.30.126.33</a> <- is this a problem???? Have I really missed something and thats why this server can`t talk to my cisco on eth1? By the way, the cisco has an IP of X.X.X.62 I am trying to have both eth0 and eth1 having IPs only 1 apart and the gateway for eth1 is set to the same as eth0. Is this adding to the problems? I can solve it fairly easily by installing windows on server 1 and configure ICS etc, but I would rather avoid that for 2 reasons: - having FC4 on the server is beneficial for us after this roject - I don`t want to give in to this problem, I would rather solve it. Thanks in advnace. Mark -- </blockquote></div>Hi Mark, Not a real expert here but I think iptables is where you need to look. Do a: man iptables also you might look into <a href="http://www.yolinux.com/TUTORIALS/LinuxTutorialiptablesNetworkGateway.html">www.yolinux.com/TUTORIALS/LinuxTutorialiptablesNetworkGateway.html</a> Have fun! Tod