[Server-devel] Bridging XS to another network

David Leeming david at leeming-consulting.com
Sun Oct 31 20:35:34 EDT 2010


Hi thanks jerry,

Almost there, just need clarification...

On the router, what should I use for the LAN network, like this or different?
172.18.0.88
255.255.255.0 ????
(is that correct? It means the network does not include the higher ranges 172.18.96.xxx etc)

Should the router firewall settings be virtual server port 80 to 172.18.0.1??? or 172.18.???.??? What is the main IP address of the XS, I thought is was 172.18.0.1

To add a route on the XS, do you mean (and what are the ??/):

route add default gw 172.18.0.88 netmask 255.255.???.??? landbond0??? 

David Leeming
Solomon Islands Rural Link 

-----Original Message-----
From: Jerry Vonau [mailto:jvonau at shaw.ca] 
Sent: Monday, 1 November 2010 10:41 a.m.
To: David Leeming
Cc: 'XS Devel'
Subject: Re: [Server-devel] Bridging XS to another network

On Sun, 2010-10-31 at 18:13 -0500, Jerry Vonau wrote:
> On Mon, 2010-11-01 at 08:55 +1100, David Leeming wrote:
> > Still no luck here. What it boils down to, is that when placing the XS
> > (eth1 - LAN) behind a router with NAT, in order to allow the XS web
> > service to be visible on the external WAN side of the router, what are
> > the required LAN IP settings including netmask and firewall settings,
> > including port forwarding or DMZ Host or other. Anna, you seem to have
> > been able to do that but I can’t replicate without more info on your
> > router/firewall settings.
> > 
> >  
> > 
> > I have tried everything I can think of and the XS is not visible from
> > the external network.  Only need to be able to see Moodle, etc, (not
> > interested in registering XOs on the external network) 
> > 
> >  
> > 
> > David Leeming
> > 
> > Solomon Islands Rural Link 
> > P.O.Box 652 Honiara, Solomon Islands
> > 
> > +677 7476396 (m) +677 24419 (h)
> > 
> > www.leeming-consulting.com
> > 
> > 
> >  
> > 
> > From: server-devel-bounces at lists.laptop.org
> > [mailto:server-devel-bounces at lists.laptop.org] On Behalf Of David
> > Leeming
> > Sent: Sunday, 31 October 2010 11:38 a.m.
> > To: 'Anna'
> > Cc: 'XS Devel'
> > Subject: Re: [Server-devel] Bridging XS to another network
> > 
> > 
> >  
> > 
> > Anna,
> > 
> >  
> > 
> > What you describe below is what I am trying to do (see the net diagram
> > in my other email). I only want apache/Moodle/wiki to be available to
> > the external network (your “regular LAN”). You’ll see that I have a
> > simple WRT54G router bridging but no matter what I try, I can’t see
> > the apache service through the router. Can you say what Wan and LAN
> > settings you used for your router? 
> > 
> > I used
> > 
> > WAN – fixed 192.168.1.88 / 255.255.255.0
> > 
> > LAN – fixed 172.18.0.88 / 255.255.255.0
> > 
> > Port 80 forwarded from WAN to 172.18.0.1 (or DMZ host with 171.18.0.1)
> > 
> > In this set up: 
> > 
> > If I try to ping from the XS to 172.18.0.88 it is OK, if I try to
> > 192.168.0.88 it says network unreachable.
> > 
> 
> 
> You have a single interface in use, in order for the XS to see past
> anything other than what routes that are present(these are local to the
> lan), what your missing is the default gateway. 
> 
> 
> > But if I use a PC hooked up on the eth1 network, with fixed IP
> > 172.18.0.89 / 255.255.255.0 (for example) I can ping the WAN address
> > and beyond. This is what leads me to think it needs one extra step
> > with route, or it may be something to do with the WRT LAN setting and
> > XS having different netmasks. You can see I am reaching at straws a
> > little L  
> 
> 
> No, you need to have a default gateway present, how are you configuring
> 172.18.0.88 on the XS?
> 
> Jerry

OK, I have that backwards your running the XS as is and you have added
the linksys with the ip address 172.18.0.88. The linksys is providing
the route to 192.168... The XS can't respond to anything from 192.168...
as there is no route back to 192.168. You can either add a route to
192.168... via 172.18.0.88, or add 172.18.0.88 as the default gateway,
on the XS. 

Jerry





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