02-18-2005
Setting Up Routing In Linux Redhat 9 Help
I have just recently got into using Linux RedHat 9. So far I love it, I have set it up on a server I am running. Right now I have set up Samba and am running a file server for my house. I have four computers, the linux box is connected to the internet through a switch I have. There are two NICS in the linux box, and I want one computer to gets its net connection through ther linux box. eth0 is connected to the internert, and eth1 is connected to my other computer with a crossover cable. Both card light up, but I get no net connection on my computer that is connected to the linux box. I have tried looking online for instuctions on how to set this up so i get a net connection on the other machine, but have had no help. If anyone knows how to do this or knows where to go to get step by step instructions please let me know.
P.S. I dont know a ton about networking..just enough to set up a swtich and get my machines online..
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LEARN ABOUT REDHAT
pppoe-sniff
PPPOE-SNIFF(8) System Manager's Manual PPPOE-SNIFF(8)
NAME
pppoe-sniff - examine network for non-standard PPPoE frames
SYNOPSIS
pppoe-sniff [options]
DESCRIPTION
pppoe-sniff listens for likely-looking PPPoE PADR and session frames and deduces extra options required for pppoe(8) to work.
Some DSL providers seem to use non-standard frame types for PPPoE frames, and/or require a certain value in the Service-Name field. It is
often easier to sniff those values from a machine which can successfully connect rather than try to pry them out of the DSL provider.
To use pppoe-sniff, you need two computers, a DSL modem and an Ethernet hub (not an Ethernet switch.)
If the DSL modem normally connects directly to your computer's Ethernet card, connect it to the "uplink" port on the Ethernet hub. Plug
two computers into normal ports on the hub. On one computer, run whatever software the DSL provider gave you on whatever operating system
the DSL provider supports. On the other computer, run Linux and log in as root.
On the Linux machine, put the Ethernet interface into promiscuous mode and start pppoe-sniff. If the ethernet interface is eth0, for exam-
ple, type these commands:
ifconfig eth0 promisc
pppoe-sniff -I eth0
On the other machine, start your DSL connection as usual. After a short time, pppoe-sniff should print recommendations for the value of
PPPOE_EXTRA. Set this value in /etc/ppp/pppoe.conf. If pppoe-sniff indicates that something special is required in PPPOE_EXTRA, please e-
mail this to pppoe@roaringpenguin.com along with the name of your ISP and the manufacturer and model number of your DSL modem. This infor-
mation will be collated and provided on the PPPoE web page for users who do not have two computers.
After pppoe-sniff finishes (or you stop it if it seems hung), remember to turn off promiscuous mode:
ifconfig eth0 -promisc
OPTIONS
-I interface
The -I option specifies the Ethernet interface to use. Under Linux, it is typically eth0 or eth1. The interface should be "up" and
in promiscuous mode before you start pppoe-sniff.
-V The -V option causes pppoe-sniff to print its version number and exit.
BUGS
pppoe-sniff only works on Linux.
AUTHORS
pppoe-sniff was written by David F. Skoll <dfs@roaringpenguin.com>.
The pppoe home page is http://www.roaringpenguin.com/pppoe/.
SEE ALSO
adsl-start(8), adsl-stop(8), adsl-connect(8), pppd(8), pppoe.conf(5), pppoe(8), adsl-setup(8), adsl-status(8), pppoe-server(8), pppoe-
relay(8)
4th Berkeley Distribution 3 July 2000 PPPOE-SNIFF(8)