[ale] Advanced Routing for Dummies
Leonard at Intelis-inc.net
Fri Apr 13 18:07:45 EDT 2001
OK sports fans...I'm in over my head and need help.
I have an internal private network and two public networks.
Local Network "A"
Public Network "B" (T1 connection, 16 static IP addresses)
Public Network "C" (iDSL, 13 static IP addresses)
I have a Linux / RH7.0 / ipchains firewall with three (3) NICs (3C509)
which connects the three networks.
"A" = eth0 (NAT)
"B" = eth1
"C" = eth2
My internal network uses the firewall NIC eth0 as it's default gateway. No
The issues I have: Network "B" sees Network"C" only through the public
network connection, not my firewall (and vice versa). If I lose wither my
T1 or my iDSL feed, "B" and "C" cannot talk to each other. Additionally,
if I lose my T1, I have to manually repoint my internal LAN traffic to the
iDSL public connection. I know there is a way for "B" and "C" to route to
each other through the firewall rather than externally, but I have yet to
find the magic incantation. Additionally, is there a way to set up the
routing so that my T1 is the preferred path for my internal network, and
yet have traffic automatically go out the iDSL side if the T1 fails?
I have read FAQ's / HOW-TO's / Magic scrolls until I can't see anymore. I
do not have the time or energy to become a routing expert and am really
just looking for an easy solution to set this up and walk away. Has anyone
done this before and can you tell me SPECIFICALLY how you accomplished this?
Thanks in advance.
The difficult while you wait.....the impossible overnight.
5960 Crooked Creek Rd
Norcross, GA 30092
Email: Leonard at Intelis-Inc.net
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