In article <8431e966.0411280619.e6e81ff@posting.google.com> , Daniel Camps wrote:

>Hello, I have a small LAN and an ADSL connection to the Internet, I would
>like to install Linux (I am thinking in Fedora Core 3) in the machine
>where I have the ADSL connection, and make the other PC's connect to the
>Internet htrough this machine.

Common enough task. In Linux, we have these documents called HOWTOs that
discuss these kind of things. As you probably haven't installed yet,
wander over to

http://en.tldp.org/HOWTO/HOWTO-INDEX/howtos.html

where you will find among other things:

684614 Nov 9 2003 IP-Masquerade-HOWTO
17605 Jul 21 22:32 Masquerading-Simple-HOWTO
287057 Jul 23 2002 Security-Quickstart-Redhat-HOWTO

45620 Jul 10 2000 Networking-Overview-HOWTO
71626 Apr 4 2004 Unix-and-Internet-Fundamentals-HOWTO

>I think I need to install and configure in that machine, DHCP and NAT, I
>don't know if I would need something else, like some Firewall capabilities.

DHCP is used when your systems are not configured manually. It just means
that you have to configure a server to hand out addresses, rather than
each host to have a fixed address. It also may complicate hostnames
unless you reserve IPs for a specific MAC address (which complicates the
setup). There is a mini-howto on setting up DHCP.

>I am a new linux user so I basically would like to know about a good
>tutorial about how to configure this stuff, or good tools or programs to
>do it, and of course advise about which are the possible alternatives to
>do it.

The HOWTOs are a good starting place (there are over 480 of them), and
there are some free books as well.

http://tldp.org/guides.html

Old guy