On Mon Jul 14, 2008 at 03:56:04PM +0530, paresh masani wrote:
> Hi Seak,
>
> I got the exact output seauence about this problem. Please refer the
> following steps that i performed. Please note that wireless packates gone
> through the firewall.
>
> 1. Machine X has the two interface wired IP:
148.88.162.134netmask:
> 255.255.252.0 and Wireless: 148.88.163.239 netmask:255.255.192.0
This is not ideal - your wireless network overlaps with the wired
network. Ideally these should be on non-overlapping address ranges,
otherwise you'll get these type of routing issues. Do you really need an
entire /18 for the wireless network?
> 2. Machine Y has one interface wired IP: 148.88.172.239
netmask:
> 255.255.252.0
> 3. Machne Y tries to take VNC of machine X via wired IP then it
> is working fine. For this the packates will not goes even to router also
> instead communication can be taken place via access switch as both machine
> are in same network.
> 4. Machine Y tries to take VNC of machine X via wireless IP then
> I could see the following situation using Ethereal packat tracer:
> - On machine Y I could see the packate SYN sent to
> machine X using wireless IP
> - On machine X i could see that packate SYN came
> from machine Y
> - machine X replied SYN ACK via wired connection(
> not via wireless :-( )
> - machine Y got the response SYN ACK packate from
> machine X
> - machine Y sending RST packate to machine X and
> this process get repeated 2 times and then VNC says connection times out.
> 5. If i removed wired connection cable then it is connecting
> successfuly.
>
> I think here firewall rejecting the packates from machine Y towards the
> wireless as firewall assume that only packates going but there is no
> incoming packate from machine X(because machine X replying via wired
> connection).
>
No, the problem here is that machine Y is receiving packets back from a
different IP address than it sent them to, therefore it is ignoring
them. You'll need to either change the routing priority on Machine X so
it will respond over wireless first (though this could cause issues for
other applications), or (preferably) change the netmask (or entire
network setup) for the wireless to prevent overlap with the wired
network.
HTH,
Robin
--
___
( ' } | Robin Hill <[EMAIL PROTECTED]> |
/ / ) | Little Jim says .... |
// !! | "He fallen in de water !!" |
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