Another basic networking question.

[Simon Slater]

On Thu, 2009-04-02 at 09:16 +0800, Ed Greshko wrote:
> Mikkel L. Ellertson wrote:
> > Simon Slater wrote:
> >   
> >> 	G'day everyone,
> >> 		I've been working through a networking cookbook that obviously assumes
> >> some basic knowledge on networking ... that I don't have. So to humbly
> >> ask of the gurus here:
> >>
> >> 	When a firewall computer has 2 nics, they should be on separate
> >> subnets? Yes?
> >>
> >> 	When an ISP dynamically assigns an ip address, is it associated with
> >> the dsl router, eth0 where it plugs in, or the ppp0 device that does the
> >> communicating?
> >>
> >> 	So if eth1 goes to a lan and has its ip address configured in its
> >> ifcfg-eth1 and similarly eth0 on the wan side is configured to get its
> >> address from dhcp, is it the ISP's dhcp server that it needs to get the
> >> address from or the local dhcp server?
> >>
> >> 	With respect to the ip address for configuration of the dsl router
> >> (defaults to 192.168.1.1 for this Linksys AG300), which subnet should it
> >> be on, the lan side or wan?
> >>
> >> 	Slightly more advanced: What are the pros and cons of using an ifup
> >> ppp0 command from the firewall computer to connect with the ISP versus
> >> connecting from within the dsl router itself?
> >>
> >> Thanks in advance.
> >>
> >>     
> > Why do these sound like test/homework questions?
> >
> > Mikkel
> >   
> Maybe because he is trying to learn and the evidence has shown that
> someone on this list will be willing to indulge almost any question even
> though answers can be found with a bit of work?
>  
	I know these are very basic.  As I have been setting things up and
expanding things, I've found lots of docs and howto's on individual
components and how they work, but along the line I missed networking
pre-school.  I got the Linux Networking Cookbook yesterday and it covers
things well in a step-by-step manner, but still assumes I know some
things I don't.  Another book is on order but will be 2 weeks and is
more advanced than this one by the sound of it.  Other books recommended
on this list are proving hard to find through local suppliers.

	The way my mind works I like to understand the fundamentals, but with
networking I've jumped in further.  Over the years I've found that
people with experience can explain things with more clarity than many
authors, hence approaching this list.

-- 
Regards,
Simon Slater
Registered Linux User #463789. Be counted at: http://counter.li.org/