Groups > comp.os.linux.networking > #1236

linux as multi-port (subnet) router using Ubuntu 11.10 server

From	lincy <lincylin@gmail.com>
Newsgroups	comp.os.linux.networking
Subject	linux as multi-port (subnet) router using Ubuntu 11.10 server
Date	2012-04-08 05:50 -0700
Organization	http://groups.google.com
Message-ID	<11134348.13.1333889415598.JavaMail.geo-discussion-forums@pbnu1> (permalink)

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Hi everyone.

   I have an fast-growing network. Around 120-130 pcs in single class c localnet (192.168.1.0/24). Because service lot large file share (multi-nas for multi-media).

   Now I am try to split it by department. So, I am using an 4 ports giga lan machine and install ubuntu 11.10 server. Because I just want to split the network but not to do any security in this machine. So, I just setup 4 subnet and enable the ip forward.

eth0: 192.168.1.1 netmask 255.255.255.0
eth1: 192.168.2.1 netmask 255.255.255.0
eth2: 192.168.3.1 netmask 255.255.255.0
eth3: 192.168.4.1 netmask 255.255.255.0

And echo 1 > /proc/sys/net/ipv4/ip_forward in /etc/rc.local

Now, My problem was.  

I can't ping cross subnet, ex: ping 192.168.2.x from 192.168.1.x
But I can open web page cross subnet. ex: open 192.168.1.x intranet web server from 192.168.2.x or 192.168.3.x
I also can't access the windows/share-folder either samba share cross subnet.
But same subnet can access. ex: 192.168.1.x's pc can access NAS within 192.168.1.x but not NAS in 192.168.2.x.

Does anyone know what's wrong ?

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linux as multi-port (subnet) router using Ubuntu 11.10 server lincy <lincylin@gmail.com> - 2012-04-08 05:50 -0700
  Re: linux as multi-port (subnet) router using Ubuntu 11.10 server Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2012-04-08 17:16 +0300
    Re: linux as multi-port (subnet) router using Ubuntu 11.10 server lincy <lincylin@gmail.com> - 2012-04-08 08:26 -0700
      Re: linux as multi-port (subnet) router using Ubuntu 11.10 server lincy <lincylin@gmail.com> - 2012-04-08 08:47 -0700
        Re: linux as multi-port (subnet) router using Ubuntu 11.10 server Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2012-04-08 18:13 +0200
          Re: linux as multi-port (subnet) router using Ubuntu 11.10 server lincy <lincylin@gmail.com> - 2012-04-08 09:24 -0700
            Re: linux as multi-port (subnet) router using Ubuntu 11.10 server Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2012-04-08 18:31 +0200
              Re: linux as multi-port (subnet) router using Ubuntu 11.10 server lincy <lincylin@gmail.com> - 2012-04-08 09:44 -0700
                Re: linux as multi-port (subnet) router using Ubuntu 11.10 server Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2012-04-08 19:54 +0200
                Re: linux as multi-port (subnet) router using Ubuntu 11.10 server lincy <lincylin@gmail.com> - 2012-04-08 17:13 -0700
                Re: linux as multi-port (subnet) router using Ubuntu 11.10 server Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2012-04-09 10:45 +0200
                Re: linux as multi-port (subnet) router using Ubuntu 11.10 server lincy <lincylin@gmail.com> - 2012-04-09 06:40 -0700
                Re: linux as multi-port (subnet) router using Ubuntu 11.10 server Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2012-04-09 21:01 +0200
                Re: linux as multi-port (subnet) router using Ubuntu 11.10 server lincy <lincylin@gmail.com> - 2012-04-09 12:56 -0700
                Re: linux as multi-port (subnet) router using Ubuntu 11.10 server Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2012-04-09 23:33 +0200
                Re: linux as multi-port (subnet) router using Ubuntu 11.10 server Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2012-04-10 08:55 +0300
                Re: linux as multi-port (subnet) router using Ubuntu 11.10 server lincy <lincylin@gmail.com> - 2012-04-09 23:40 -0700
                Re: linux as multi-port (subnet) router using Ubuntu 11.10 server Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2012-04-10 14:39 +0300
                Re: linux as multi-port (subnet) router using Ubuntu 11.10 server lincy <lincylin@gmail.com> - 2012-04-10 08:22 -0700
                Re: linux as multi-port (subnet) router using Ubuntu 11.10 server Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2012-04-08 21:13 +0300
                Re: linux as multi-port (subnet) router using Ubuntu 11.10 server Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2012-04-08 20:48 +0200
                Re: linux as multi-port (subnet) router using Ubuntu 11.10 server lincy <lincylin@gmail.com> - 2012-04-08 17:25 -0700

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