Re: Network setup.
So, you're telling that the IP that my ISP gives me is <> than the IP of my ethernet
card?
Supose the following scenario:
- I'm connected to my ISP and it gives me a IP (say, 146.164.41.75).
- I have a little network at home with 2 computers: 192.168.0.1 (which I believe is
the default debian gives me at installation) and 192.168.0.2 (+1 on the second
installation I did - I did not make it yet, but I'm intending to do so).
I want to write a C program (I know it's a developer issue...), using , for example,
the function gethostname. Where do it applies?
Anyway, the question is: I can have two IP's in the same machine for different
interfaces. When (and how) do I use one and when (and how) do I use another?
Gaucho
John Hasler escreveu:
> Hans writes:
> > I'm also not sure about something in pppconfig: it asks you for an IP
> > address, but strongly advises you not to change the 'noipdefault' . It
> > furthermore suggests that if you have a local IP (I read in this: the
> > intranet's IP of your machine, but I could be wrong)
>
> You are. By "local ip" here I mean a "static" ip assigned by your isp when
> you pay him the extra money he wants for a "static ip" account. By "remote
> ip" I mean the ip of the isp's machine. The remote ip is very rarely
> needed.
>
> > In case you get a dynamic IP from your ISP (which I do), then just use
> > the local IP ending with a colon.
>
> No. The ip you get from your isp is intended to be your "local" ip, that
> is, the ip of the ppp interface. Pppd gets it (and the ip of the isp's
> machine) from the isp and gives it to the kernel which attaches it to the
> ppp interface. This is all automatic when dynamic ip addressing is used.
>
> > I tried both 'noipdefault' and 192.168.0.1: but I am not sure which one
> > actually worked.
>
> "noipdefault" is the right one for you to use. This lets pppd accept
> whatever ip's your isp sends.
>
> > The NET-3 HOWTO is pretty clear about the network setup,...
>
> Not clear enough. Computers don't have ip's. Interfaces have ip's.
> 192.168.0.1 is the ip of your ethernet interface, but it has nothing to do
> with the ip of your ppp interface. Pppd takes care of the latter.
>
> --
> John Hasler
> john@dhh.gt.org (John Hasler)
> Dancing Horse Hill
> Elmwood, WI
>
> --
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