Re: [SLUG] LAN communication

From: Donald E Haselwood (dhaselwood@verizon.net)
Date: Tue Jul 27 2004 - 22:04:34 EDT


Larry,

Thanks for the tips. Very helpful.

The problem 1 solution was adding the router address as the gateway address
in the hosts, and setting a DNS address in the router and putting that in
the host machines. The fixed ip address machines now get on the internet.

For problem 2, the "iptables stop" moved me a notch closer on the NFS
setup. The Suse 9.1 machine mounted the file on the RH8 machine, but gave
this odd message (since it connects to the internet OK):

   nfs server reported tcp not available, falling back to upd

Doing a "ls" on the mounted file doesn't show any folders (of which there
are a gazillion), but at least it's doing something and not just timing out.

Regards,

Don

At 07:20 AM 7/27/04, you wrote:
>On Mon, 2004-07-26 at 22:10, Donald E Haselwood wrote:
>
> > Problem 1:
> >
> > With DHCP enabled, I can ping the Suse 9.1<->WN98, and Suse 9.1<->RH8 by
> > address, but not by host name unless I manually go into the router, find
> > the assigned IP address, then plug them into the hosts files. This OK
> > except that at some time in the future I'll be doing something and the
> > addresses will be different (and by then I'll forgotten, and spend time
> > trying figure out what went wrong).
> >
> > If Suse 9.1 and RH8 are given fixed IPs, then I don't seem to get internet
> > access.
> > I tried putting access permission for the fixed IP in the router but
> > that didn't work.
> > Maybe this is a DNS issue, but if so, I haven't found the answer.
> > Somewhere I read the that WRT54G has a multicast problem--don't know
> > that is an issue here.
>
>Look at your router configuration. It should show what IP address span
>it is giving out in dhcp. ex 192.168.1.2 -> 192.168.1.31
>
>Use static IP addresses for the Linux boxen that are outside of that
>range. ex 192.168.1.100,192.168.1.101 etc.
>
>Set your gateway on those machines to your router's address.
>
>First try to set /etc/resolv.conf to show "nameserver 192.168.1.1"
>without the quotes where the ip address is the address of the router.
>Then "ping www.yahoo.com". If that doesn't work, change the ip after
>nameserver to the ip address your isp uses for name resolution. If that
>doesn't work try "ping 24.73.203.10". If that doesn't work, post
>another message to the list on this issue alone. This has to be working
>properly before moving to the next step.
>
>I have yet to find a cable modem type of router ie the one you are using
>that is set by default to block any ip addresses outside of that given
>out by dhcp. Although possible to do, I've never seen it set that way
>by default.
>
>If those tests are successful, then you need to do one of two things.
>You can either read up on dns to set up your own internal dns (not
>recommended for the size of your small network), or you can simply
>continue with your suggested solution of entries in the hosts files. I
>think hosts file resolution is perfect for your network.
>
>Now test to make sure you can ping each of your internal machines with
>"ping computername". If any of them fail, post back letting us know
>where it fails and only post about that issue. If they succeed you are
>done with problem 1. Problem two relies on this to be working smoothly.
>
> > I
> > Problem 2:
> >
> > Samba
> > I setup the Samba Client in Suse 9.1. When I do a browse Windows Network
> > (with the other machine running WN98) it pops up a "Unknown error
> condition
> > in stat: Network is unreachable" along with a msg to send in an error
> report...
> >
>
>Network is unreachable would fit if problem 1 wasn't solved. That being
>said, I have found it difficult to get network browsing working on
>various Distros. You may want to concentrate on getting the command
>line mounting of a folder working first.
>
> > NFS
> > I setup the RH8 /etc/export with a directory, /mnt/, and do
> > exportfs. exportfs shows the file has been exported with "<world>"
> > indicating that there shouldn't be a permissions problem.
> >
> > When I go to the Suse 9.1 and setup NFS Client, and do a Browse for NFS
> > servers, nothing shows up.
> > Doing it manually with, mount 10.1.1.100:/mnt /mnt, ends with a time
> > out. ping 10.1.1.100 works just fine.
> >
>
>On the machine that has the nfs share, make sure the nfs deamon is
>running. Then make sure there is no firewall set up. To make sure it
>is not... "/etc/init.d/iptables stop" should temporarily assure you that
>the default firewall setup is not blocking you. Test after stopping the
>firewall. You should be able to mount the folder being shared. If you
>still cannot connect to it you should post again and include the
>contents of your exports file and explain what you are getting.
>
>
>
> >
> > Any tips, suggestions, or soothing words would be appreciated.
> >
> >
>
>Your posting touched on several problems that rely on one another's
>successful setup in order to work. You should tackle the problems one
>at a time until solved before going on to the next for it to work. If
>problem 1 isn't solved, you'll never get problem 2 to work. (except for
>maybe the 10.1.1.100:/mnt /mnt which could have worked if certain
>conditions were met) Anyway, I wouldn't recommend working on 2 until 1
>is done.
>
>
>Sorry if I've "gone on" a bit. It is too early for this |-0
>
> > Regards,
> >
> > Don
> >
> >
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