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Re: woody browsers not working

On Monday 02 September 2002 17:23, Stephen Gran wrote:


> > so I assume the ppp config is good and I am connected to my ISP
> > (the 'clock' is definitely running).
> >
> > Why cannot I browse? I've looked at 'path' and 'permissions' and
> > things seem correct. I can't find '/dev/ppp0', but that is the
> > same on the boxes still running Potato, so I assume it's normal.
> >
> > Obviously something is wrong, but I've no idea what - can
> > someone please help me out.
> It sounds like you have a different issue than they did.  It
> appears that ppp is actually working for you, but that either DNS
> or routing is failing.
> I am going to operate on the assumption (correct me if I'm wrong)
> That what you have are three boxes, each with a NIC, connected to
> each other through a hub or router, and one of them has a modem
> and gets an internet connection which it then shares with the
> other two.
I think your detailed response shows me where I have gone wrong.
However, things are more complicated than you assume and I now 
wonder if I will be able to accomplish all I want to do.

Briefly, I'm in my 70's and have medical problems, so originally I 
had one box in the bedroom (complete with modem, printer, CDRW and 
so forth) and another in the lounge also with modem, printer etc.
giving me 'full facilities' wherever I was. Following upgrades I 
built a third box intending to use this for a firewall (I even have 
a modem for that).

I obtained a hub, cabling, NIC cards etc intending to have a 'cosy' 
little network. A neighbour, living in the flat above saw the bits 
and pieces and said he had ADSL which I was welcome to use (ideal for
heavy downloads eg kernels) so I cabled to his network (box and 

Initially he ran Windows, so I installed W98 and we exchange photo 
editing, music data etc and also have a networked printer. I use the 
ADSL when beneficial. He has now been converted to include Linux, he 
won't go yet to Debian, but Mandrake will do for a start.

So far I've put Woody on only two boxes (bedroom and lounge), and I 
wanted each to have modem access to my ISP and in due course to be 
able to access the ADSL. This way I don't always have to bring the 
network up if I'm likely to be restricted to one room. In this case, 
I assume I'll need more than one gateway. 

Paul Condon suggested using 192.168.1.x - this is what I have planned
(I've laid out my scheme to use .4, .5 and .6 for the three boxes - 
I'd like to suggest I was being clever, but it was just so that I 
could leave 192.168.0.x for my neighbour).

Routing for both boxes excludes the ppp0 entry, so this must be the 
problem taking each box in isolation. I shall try to get one working 
tomorrow. Then I shall have to see how to proceed from there.

If you have any advice overall on what I said above, I shall be very 
grateful. What you have communicated so far has been a very great 
help in understanding. Very many thanks and regards,     john.
> I'm probably going to cover some ground that you already have, but
> maybe you'll get something new out of it.
> Box 1 has the modem, Box 2 and 3 don't.  Box 2 and 3 should have
> /etc/netwrok.interfaces something like:
> auto eth0
> iface eth0 inet static
>     address
>     netmask
>     gateway
> Box 1 should have:
> auto eth0
> iface eth0 inet static
>     address
>     netmask
>     network
>     broadcast
> That sets up boxes 2 and 3 to use box 1 as their gateway, but
> doesn't provide box 1 with a gateway.  ppp should take care of
> that on it's own, so long as the gateway option is used in the
> config file (don't have a box with a modem in front of me and
> can't remeber the exact file or option name, sorry)  Once all that
> is done, try route -n on all three machines.  On box 2 and 3, you
> should see something like:
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref  
>  Use Iface
>   U     0      0    
>    0 eth0
>         UG    0      0    
>    0 eth0
> On box 1 you should see something like:
> Destination     Gateway         Genmask         Flags Metric Ref  
>  Use Iface
>   U     0      0    
>    0 eth1
>   U     0      0    
>    0 ppp0
>  UG    0      0    
>    0 ppp0
> If you don't, routing is not being set up - you may have to
> include a 'route add' command to ppp - man route for details and
> google for examples, there are plenty.
> If you get something similar, try browsers on box 1 - do they
> work?  If so, good, routing and DNS is taken care of.  If not, try
> ping (that's www.debian.org) - if that works, but
> name resolution doesn't, it's a dns issues, and you have to look
> at /etc/resolv.conf .  Once box 1 is set up for the outside, try
> pinging the internal boxes, by IP address at first.  Hopefully
> that works - otherwise you probably have cabling/router/NIC
> issues.  You can then add their names and addresses to /etc/hosts
> so that you can communicate with them by name.
> Finally, go back to boxes 2 and 3.  They'll probably need manually
> edited /etc/resolv.conf's, as they don't get updated by box 1's
> dial-outs.  Try the above route command, and ping both by name and
> IP address.  Does either work?  If the name fails, but the IP
> address works, it's a DNS failure.  If both fail, but you can ping
> box 1, it's a forwarding problem on box 1.  If you can't ping box
> 1, hardware.
> Sorry to be so verbose and HTH,
> Steve

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