[techtalk] Really weird computer troubles

Brian Engle bengle at fti-net.com
Tue Jan 25 10:46:05 EST 2000

what brand of network card do you have in the linux box? this is a long
shot, but I was having the worst time getting a ne2000 to work under RH 6.1,
apparently RH decided to take out the autoprobe option from the ne2000
kernel module, so it wouldn't detect an ne2000 that wasn't plug-n-pray....my
ne2000 had jumpers to set everything (IO, irq, etc), but it still wouldn't
detect, I found an answer on Red Hat's page, just search for the string
ne2000 on the troubleshooting page, they had some steps to try to get the
kernel module working, however I just gave up and installed a 3com card, it
detected it and has been running happily ever since, and the ne2000 is
sitting on the desk gathering dust....I guess I'll use it when my wife's
network card goes screwy, or if I build another box with an os that supports

also, I'm assuming that you had the network up and running before, do you
have a hub, or was it just a straight cable connection from nic to nic? if
the cable is going from nic to nic, did you make the cable yourself? I had
the worst time getting the cable from nic to nic to work, finally got it
running, then a week later I bought a hub, so I had to switch to straight


> -----Original Message-----
> From: Lighthouse Keeper in the Desert Sun
> [mailto:ccovingt at one-eyed-alien.net]
> Sent: Monday, January 24, 2000 9:15 PM
> To: 'techtalk at linuxchix.org'
> Subject: RE: [techtalk] Really weird computer troubles
> On Jan 24, Brian Engle conjectured:
> > 1) ping the eth0(internal LAN) address of the linux box 
> from the linux box
> > (this meant the net card is working)
> Did that, several times.  Worked.
> > 2) ping your external IP(ppp0) address from the linux box 
> (this means tcp/ip
> > is set up right on the linux box)
> That works, too (when I type the ip number correctly :P )
> > 3) ping something outside your network (I like to use my 
> ISP's name server)
> > from the linux box (this means everything is right with the 
> ppp connection)
> That works.
> > 4) ping a hostname, ie. myisp.net, from the linux box (this 
> means your
> That works fine.
> > 5) ping the eth0(internal LAN) address of the mac from the 
> mac (this means
> > the netcard in the mac works)
> Works.
> > 6) ping the eth0(internal LAN) address of the linux box 
> from the mac (this
> No chance.  This is where the trouble starts.  The machines aren't
> talking.  Pinging from Mac to linux makes the RX light from 
> the mac's eth
> card blink, but not the linux one.
> > 7) ping the mac's eth0(internal LAN) address from the linux 
> box (while this
> Still no go, but this time *both* RX lights blink.  What's 
> amusing is that
> I am using the *exact same firewall script* that I was a 
> month ago before
> I got hacked.  It worked then.  It *should* work now.
> I skipped these.
> > 8) ping the linux boxes external (ppp0) IP address from the 
> mac (this means
> > the forwarding and tcp/ip are set up correctly)
> > 9) ping the IP address of your ISP's primary nameserver 
> from the mac (the
> > result of this is twofold, if you can't get through to the 
> DNS, we all know
> > what happens, but it also tests to make sure the linux box 
> is forwarding the
> > info right)
> > 10) ping the hostname of of your ISP, ie. "ping myisp.net" 
> from the mac
> > (this means you've got the nameserver info set up right on the mac)
> > one other thing of note, based on your second problem with the ppp
> > connection, if you're running /etc/rc.d/rc.firewall from 
> /etc/rc.d/rc.local
> > and this is supposed to run after the modem connects, if it 
> doesn't connect,
> > the script will still run, it will just throw out errors 
> when you try to set
> To clear up confusion:  we have one phone line, and only dial 
> when we want
> to go online.  The ip forwarding/ipchains starts at boot, not at pppd
> start.
> Conni
> -- 
> First we go to Three Mile Island, then Chernobyl.  It's the Nuclear
> Catastrophe Tour!			    
> 			-Adam W
> http://www2.one-eyed-alien.net/~ccovingt
> http://www.angelfire.com/anime/Galadriel
> ************
> techtalk at linuxchix.org   http://www.linuxchix.org

techtalk at linuxchix.org   http://www.linuxchix.org

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