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Many thanks to Mr Guzman for helping me sort this out! Here's what got my redhat8 and linksys 4 port router working...

1 You should have your cable modem (or whatever) connected to the WAN port on your router

2 Your redhat machine connected to one of the LAN ports on the router.

3 su to root on your redhat box and give the following commands ($=prompt)::

  $ /sbin/ifdown eth0
  $ /sbin/ifup eth0


  This will bring the 'eth0' interface down and then up again, forcing a DHCP (DynamicHostControlProtocol) request to the router instead of to the cable modem.  If this succeeds without any error messages, then...

4 Run /sbin/ifconfig once again and verify that you have an IP in the 192.168.1.x range for eth0.

5 Run /sbin/route and verify that http://192.168.1.1/ (go on and click it! why not?) is set as your gateway.

  (Note that if the DHCP client is properly configured on your redhat machine, all these values should be correct.)

6 Return to the routers setup http://192.168.1.1/ and make sure it is getting the proper address from the cable modem (this will probably be 66.215.200.something).

  If it is, then you should be able to fire up a browser and get on the net.

7 Test it by getting to the net!


And Mr Guzman was right! It worked like a charm!

This was my set up:

On my RedHat8 box, my cable modem is set up this way::

  bash-2.05b$ cat resolv.conf
  ; generated by /sbin/dhclient-script
  search charterpipeline.net
  nameserver 24.25.195.3
  nameserver 24.205.1.62
  nameserver 24.205.1.14
  nameserver 24.205.192.36
  nameserver 24.205.224.36

My Linksys router I.P. address will be::

  192.168.1.1

I need to get my eth0 info as well I imagine::

  bash-2.05b$ cat ifcfg-eth0
  DEVICE=eth0
  BOOTPROTO=dhcp
  ONBOOT=yes
  USERCTL=no
  PEERDNS=no
  TYPE=Ethernet