Changed ISP, firewall no longer works

[Vaughn Treude]

In the immortal words of Ed McMahon, "you are correct, sir!"  It works, 
thanks!

Vaughn

On Friday 25 October 2002 21:35, you wrote:
> On Fri, 2002-10-25 at 17:54, Vaughn Treude wrote:
> > Hello folks:
> >     Thanks for your suggestion when I was moaning about my problems with
> > Getnet.  I've switched to Deru, but I've already got problems.  As you
> > would suspect, they don't help you with Linux, just Windows.  I was able
> > to get it working with a direct connection to my laptop in its Windows
> > incarnation, but that's not much good.  I have an old PC running Mandrake
> > 7 that I was using as a firewall - it has two NIC's - so I can get
> > Internet service on every machine in my network.  That's the machine that
> > does
>
> 't want to work for me.
>
> >     The problem is they changed me from a static IP (Getnet had that)
> > back to DHCP (which I originally had working for my Qwest DSL service.) 
> > The device on the Cisco modem is eth1.  That goofy eth1 wouldn't let me
> > change its IP address with ifconfig; it was stuck at that fixed address. 
> > I finally ended up rebooting it, and the address was gone.  I also set
> > its eth1 script to include the lines "ONBOOT=yes" and "BOOTPROTO=dhcp" as
> > recommended in some article I found in a Google search.  Now the trouble
>
> s that I can't change the routing with the route command.  First it
> wouldn't let me remove the old Getnet static IP at all until I removed it
> from the "/etc/hosts" file and rebooted.  Now I can't add a default root at
> all.  For one thing, I don't know what to use for a gateway designation.  I
> added "gateway1" to the "hosts" file with an address of "0.0.0.0", but I
> don't know if that's correct or not.  Then if I try to say "route add
> default gw gateway1" it says "Invalid argu! ment."  (Which one?)  That
> probably doesn't make sense anyway.  If, on the other hand, I try "route
> add default dev eth1" the error is "No such device."  Not true!  But the
> problem may be that eth1, according to ifconfig, has no IP address.  But I
> can't set it to any specific address, because Deru's DHCP server is
> supposed to give us one.  But how do we get that address?  I vaguely
> remember something about the "dhclient" command, but that's lost in the
> mists of time (didn't write down the   parameters!) Also, it seems someone
> in PLUG told me I shouldn't need to run dhclient.
>
> >     Any suggestions?
>
> ----
> first off, ditch the gateway addresses - dhcp will handle that for you.
> don't add any routes to the routing table...dhcp will handle that too.
>
> on redhat, you would need the following in /etc/sysconfig/network
>
> GATEWAYDEV=eth1
> NETWORKING=yes
> FORWARD_IPV4=yes
> HOSTNAME='your.host.name'
> GATEWAY=
>
> then
>
> locate ifcfg-eth1  (on redhat it is in /etc/sysconfig/network-scripts)
>
> edit it...
>
> device='eth1'
> broadcast=""
> ipaddr=""
> netmask=""
> network=""
> bootproto='dhcp'
> onboot = yes
>
> then save it
>
> then try... ifup eth1
>
> Craig
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