Re: ip masquerading/subnets

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bruce wrote:
craig...

if you look at the diagram again.. box2 has ath0 which is on the 192.168.1
sub (it's 1.5). box2/eth0 is on a different sub, because as i understand it,
you can't have multiple nics on the same box, on the same subnet....
Sure you can! Mikkel's advice is perfect here. Create a bridge, remove
the IPs from ath0 and eth0, add the former IP of ath0 to the bridge,
then add the two devices to the bridge.
Everything is now on the same subnet, including box3.

the issue is what has to be setup on box2 regarding iptables/route cmds to
allow this to all work.

thanks


-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Craig White
Sent: Monday, November 26, 2007 3:40 PM
To: For users of Fedora
Subject: RE: ip masquerading/subnets


On Mon, 2007-11-26 at 15:43 -0800, bruce wrote:

Hi mike..


here's my system:

internet


   dsl box
      V
      V
    dlink router (192.168.1.100)
        V
        V
      switch  ->>>>>>>>>>>>>>+
        ^                    V
        ^                    V
        ^                    V
       box1           wireless access point (192.168.1.200)
         (eth0)               |
                              |(ath0)
                             box2
                              |(eth0)
                              |
                                           box3 (future) (192.168.2.13)

   so:
router - 192.168.1.100 (gateway)
wireless access point - 192.168.1.200
box1 (eth0) 192.168.1.3

box2
   ath0 - 102.168.1.5
   eth0 - 102.168.2.5

box3
   eth0 - 102.168.2.6

box1 connects to the switch, which is connected to the access point via
the

lan (eth) connection.

so, everything is on the 192.168.1 subnet, except the eth0 nic of box2,
and

the box3 that'll be added to interface with box2/eth0...

box2 has ip_forwarding set.

so my basic questions:
-what do i need to do on box2 to allow a user to
 be able to do a "ping 192.168.2.5"
-what do i need to do on box2 to allow a user on
 box1 to be able to "ping 192.168.2.5" and have a
 successful reply.

bear with me !!
----
box 2 and 3 should be on same subnet as box 1 ( 192.168.1.0/24 ) because
wireless access point is not the same thing as a router.

Craig

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