need to ask some questions about NAT'ing to two interfaces based on
destination address wherein the destination address is unknown(sort of)
basically what i want to do is load balance a web server which is connected
to two internet links. here's the diagram.
ISP1<--->eth1|----------------|
| LINUX BOX |eth0<--------->WEBSERVER and INTERNAL
LAN
ISP2<--->eth2|----------------|
i know how to DNAT the connection destined for the webserver that may be
coming via the ISP1 or ISP2 link. what i do not know is how i would be able
to determine that the request came via that link so that i will be able to
SNAT the reply to that interface.
just need an idea what i need to enter in my iptables script.
``
sandy
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