[ale] Multihoming, Gateways, DHCP, and you!

[Drag0n]

>From what i understand of DHCPCD, it should get the default gateway from
the dhcp server(at least that is how things work on my Comcast firewall.
My set up is as follows
1 p!!!500 firewall with 2 nics,
	eth0 is dhcp to comcrap
	eth1 is static ip to my router
1 p!! 400 router with 5 nic's (room for several more if needed)
	eth0 to the firewall static route
	eth1 to my DMZ
	eth2 to my development net
	eth3 to my guest net
	eth4 to my main net
each network off the router has the routers interface as its default
route. the router does the forwarding as needed. the firewall has a
static route for the router to reach all the sub networks. if i was
using just one box, i would not need the ectra routing statement. as
long as each network knows how to reach its default router, DHCPCD will
provide the firewall/router with the needed default gateway for the
internet.

Drag0n
CCNA, RHCE
dragon at atlantacon.org



On Sat, 2003-09-27 at 20:29, Howard Fore wrote:
> Ok, me not you (sorry).
> 
> For kicks and giggles I decided to convert a dustcatcher into a
> firewall/router for my house. It's a HP Netserver E50 (P2 333) and I
> put 4 NICs in it and am running Knoppix-std and Shorewall. My cable
> modem is connected to eth0 and uses dhcp for addressing. My wireless
> access points are on eth1, the LAN is on eth2, and any machine that I
> decide to put into a DMZ situation will hang off eth3. A bit excessive
> for most home LAN setups but hey, I'm a geek.
> 
> Anyway, the problem is in setting the gateway for eth1, eth2, and eth3.
> How do I configure those NICs to use eth0 as the gateway? Given the
> relative infrequency that Comcast switches the IP on me I suppose I
> could simply give them the address Comcast gives me on eth0, but that
> seems a bit arbitrary. Suggestions or ideas?
> 
> --
> Howard Fore, mylists at hofo.com
> "I hope you believe you understand what you think I said, but I'm not
> sure you understand that what you've heard is not what I meant."
> President Richard Nixon
> 
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