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RE: ip masquerading



again.. hi john..

if by network mangler, you mean "network manager", no, it's not enabled on
the laptop/system.

i've tried various route cmds, but it doesn't appear to be working. (or i'm
screwing something up...)

i i'm on box1 (which is windows), and i do a ping 192.168.2.33 (which is the
eth0 nic) on box2, i'm assuming i have to do something to "translate" the
192.168.2.33, into 192.168.1.33 (which is the ath0) on box2. the only way
box1 can get to box2 is via the ath0 (wireless) nic..

any thoughts/comments/pointers.

thanks


-----Original Message-----
From: fedora-list-bounces redhat com
[mailto:fedora-list-bounces redhat com]On Behalf Of John Summerfield
Sent: Saturday, November 24, 2007 10:00 PM
To: For users of Fedora
Subject: Re: ip masquerading


bruce wrote:
> Hi John!!
>
> I've forgotten something, as I thought this was working at one time, so
it's
> back to the basics....

You haven't said whether you're using network mangler. It will not work
with network mangler.

>
> to begin, i have two boxes:
>
>   box1              -->>>     box2
>
>  box1
>   eth0 - 192.168.1.2
>
>  box2
>   ath0 - 192.168.1.5
>   eth0 - 192.168.2.5
>
> from box1, i can ping box2/ath0 as they're on the same subnet. i can't
ping
> box2/eth0.
>
> from box2, i can ping box1. on box2, i can ping both nics.
>
> how the heck do i setup box2 so box1 can ping box2/eth0??
>
> is there a route cmd i can try on box2 that does a forward of traffic? is

man route

> this even possible? i'm pretty sure it should be possible. while i'm
> focusing on just a single box to connect to box2/eth0, i want to have all
> the boxes in my system eventually connect to box2/eth0, just like they do
> with box2/ath0... i shouldn't have to have a route cmd on each box,
> particulary as some boxes are windows, and don't have route!!
>
> so.. what's the simple solution for this issue?
>
> i can post my iptables/route output on box2...
>
> thanks
>
>
> -----Original Message-----
> From: fedora-list-bounces redhat com
> [mailto:fedora-list-bounces redhat com]On Behalf Of John Summerfield
> Sent: Saturday, November 24, 2007 6:46 PM
> To: For users of Fedora
> Subject: Re: ip masquerading
>
>
> bruce wrote:
>> hi...
>>
>> i have a situation where i have a system with two connections, one
> wireless,
>> one eth connetion. i can currently connect with the wireless ath0 to my
>> network/internet/etc...
>>
>> however, when i activate the eth0 at the same time, i can't access the
>> network via ath0. as far as i can tell, i need to implement ip masquerade
> to
>> have eth0 map, to ath0...
>>
>> my test ip addresses are:
>>  ath0 - 192.168.1.33
>>  eth0 - 192.168.2.33
>>
>> any thoughts/comments/pointers...
>
> You don't need IP masquerading, unless this system's going to be a
> gateway to the Internet for other computers.
>
> You don't need IP masquerading if some other device is already doing it.
> The other device does need enough routes to access everything connecting
> through it, but in the usual case (you only have one subnet) that's how
> it's working. In your case, I assume you're using a "hardware" router
> and it's IP address is 192.168.1.1 or 192.168.1.254 (these are defaults
> for some brands). If it can be configured to route traffic to
> 192.168.2.33 via 192.168.1.33, then you don't need IP masquerading, you
> just need to configure the route.
>
> You do need both interfaces active at the same time, and network manager
> cannot do that at present, I've just engaged in a lengthy discussion
> about that either on this list, or on -test.
>
> I don't know whether network manager can be configured to do one network
> and not the other.
>
> In addition to configuring both network interfaces to be active at the
> same time, you also need to enable forwarding in /etc/sysctl.conf
>
> Here's script I run for myself, for a similar task. It doesn't show
> everything, and it won't suit you without some work.
> [root localhost ~]# cat bin/startrelay
> #!/bin/bash
> ifdown eth0
> ifconfig eth0 172.17.0.1
> route add -net 192.168.9.0 gw 172.17.0.19  netmask 255.255.255.0 eth0
> service dhcpd restart
>
> [root localhost ~]#
>
> ath0 in this system provides access to the Internet via a Linux system
> function as an Internet gateway. It's configured via
system-network-config.
>
> "ifdown eth0" takes down the configuration established by
> system-config-network for eth0, I don't want this configuration to be
> standard.
>
>
> --
>
> Cheers
> John
>
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>
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>
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--

Cheers
John

-- spambait
1aaaaaaa coco merseine nu  Z1aaaaaaa coco merseine nu
-- Advice
http://webfoot.com/advice/email.top.php
http://www.catb.org/~esr/faqs/smart-questions.html
http://support.microsoft.com/kb/555375

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