firewall + network

firewall + network

Post by Frank&Stei » Thu, 10 Oct 2002 16:58:54


Currently we are migrating from one ISP to another. This is the case (ip
addresses have been replaced by fake ones):

current public IP:
new public IP:

The public IP's are dnatted to an internal address:
iptables -t nat -A PREROUTING -p tcp -d --dport 80 -j
DNAT --to

Currently the default gateway of the firewall points to the

Is there a (simple) way to let the 2 public IP's co-exist for some time,
untill we migrated DNS to the new provider?
I want to replace the default gw with, but I want the
webserver to be reachable by the 2 public IP addresses and Can this be accomplished with iptables?