Re: setting up a 10.1 box to become a router

Christian wrote:
Thanks a lot houghi!

Due to your questions (and my attempt to answer them) I found out that
name resolving didn't work and by that I found the fault. I had set a
wrong name server address in the DHCP server comfiguration.

Once again thanks a lot for the help to locate the needle in the haystack.

Please don't toppost. And it was not a needle in the haystack. It is
cutting out as much as possible of things you don't need.

e.g. if your car makes a strange sound, first turn off the radio. ;-)

What I do with network or internet related problems is to follow the OSI
modell. Well, sort of.
First I look if the machine is on and if there are any other strange
things going on with the machine
Next I will see if the cables are connected. Green light on the network
cable. Correct lights on the modem.
Then I will look and see if there is anything strange with the
connection. ifconfig will help me there.
Next I will see if there is some sort of network connection possible.
This I will do with first a traceroute from the machine closest to
whereever I want to connect to and that solely on IP.
Then I will do a traceroute from other places.
Then I will do a traceroute to something with DNS.
Then the next test is to do a telnet on the service I can not contact
And last I will test the application that gives me problems.

Out of experiece I know that the best place to start is the traceroute
to something with an IP adress. I have some IP adresses memorised, yet
most anything can be used, as long as you can get outside your providers
netwrk, it should be OK. 20.30.40.50

The fact that you can;t actually reach the end is of no importance. It
is just that you can see that you are able to reach the outside world.
Do some traceroutes if possible on a working systenm to see how it
should look like.

That will give a good indication if and where something lower gives
problems. If that does not work, you can look at the underlying issues.
If it does work, you at least know that routing and such thing DO work
and won't bother you with the other tests.

It is the fastest way to detect network issues. The moment you know
where the problem is, the solution is extremely easy most of the time,
or at least you know where to look.

houghi
--
Always listen to experts. They'll tell you what can't be done,
and why. Then do it.
-- Heinlein : Time Enough For Love
.

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