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Re: diald vs ipmasquerade

> "Brian M. Rectanus" wrote:
>   >> 
>   >> At 09:38 AM 11/22/97 +0000, Chuma Agbodike wrote:
>   >> >Do diald and ipmasquerading serve the same purpose ?
>   >> >Or do I have to use both ? I have a 3 node ethernet lan.
>   >> >The all had windows on them. Now I installed Linux 2.0.29 (debian 1.3)
>   >> >on the unit that has the modem on it. And would like the other units
>   >> >to access the internet via the modem on LINUX unit.
>   >> >So I have diald running on the linux. The windows node have the
>   >> >linux unit as their gateway. But if I ping an IP diald doesn't dial.
>   >
>   >You cannot ping an IP.  You have to ping an address that must be looked up
>   >like:
>   >
>   >server.no.where.net
>   >
>   >Otherwise diald assumes that the ip in on your local net and no dial is
>   >nessasary.
> I don't understand what you are saying here.  Diald works on the basis of
> IP addresses only.  If you ping a name, the very first thing that happens
> is that gethostbyname() is called to look up the IP address from the name.
> That _may_ involve a nameserver lookup across the network or it may be
> relovable from cached data.  If it is not cached it will send a query to 
> external nameservers, and that will cause diald to start the link.
> Equally, diald will start the link if it receives any other kind of 
> packet for a remote site, provided that you have your routing correct.
> (Don't forget that it has to call the nameserver itself in that manner.)

  Basically I mean that I could not get diald to work with a ping to an IP.
diald seems to only want to come up for something requiring a name lookup. Of
course, now that I think of it, this is probably because I have a dynamic IP 
from my ISP...


> -- 
> Oliver Elphick                                Oliver.Elphick@lfix.co.uk
> Isle of Wight                              http://www.lfix.co.uk/oliver
> PGP key from public servers; key ID 32B8FAA1

Brian Rectanus
Kansas State University
Computing and Informational Sciences
Multimedia/Web Programmer

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