[ale] Hybrid cable connection

[Joe Knapka]

Sorry, in my previous reply, I told a lie. Something bad
*can* happen if you let eth0 be ifconfig'd at boot
time: since incoming packets on the downstream cable
link will be seen by the kernel, then (if you use
diald or some such) your link may bounce up and down
if i.e. someone pings you. Ipchains is the answer:
deny incoming icmp packets, and refuse fo forward
packets entering via the external (eth0) interface.

Luck,

-- Joe

Phil 49 wrote:
> 
> I'm having trouble trying to automate the connection to my ISP using my
> hybrid cable modem access. I can get connected by manually activating the
> interfaces in RedHat's network configuration tool. Basically here is what I
> have running and my procedure for connecting to my ISP.
> 
> RH 6.0
> NE2000 PCI NIC (It's a clone and set as eth0)
> *Static IP*
> 
> US Robotics Sportster 33.6 on /dev/modem (/dev/ppp0)
> *DHCP*
> 
> I activate the ppp0 interface. Listen for handshaking, wait approx 30
> seconds, and then activate eth0....Voila! Works great.
> 
> I tried adding a line to ip-up, and ip-down in /etc/ppp respectively
> 
> (ip-up)
> 
> ifconfig eth0 up
> 
> (ip-down)
> 
> ifconfig eth0 down
> 
> But the eth0 comes up before an IP address is assigned to the ppp0 device.
> So, how can I delay bringing up the eth0 device, to wait until the ppp0 has
> been assigned an IP address?
> 
> Thanks,
> 
> Phil
> 
> _______________________________________________________________
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-- Joe Knapka
* I speak only for myself, except when the little transceiver
* at the base of my skull is activated...