Routing Private -> Public IP addresses w/o Masq or NAT
Hi folks;
I'm in a situation where a company is trying to migrate away from a public IP address block they've been mistakenly using for years, to a proper private IP address scheme. They wanted to use a Linux router to bridge between a 10.x.x.x network and their old network, so departments can be cut over one at a time. However, the 2.6.9 kernel we're using doesn't seem to want to forward packets between a private and a public network without using IP Masquerading or NAT.
We'd like it to act like it shouldn't, and just route packets between the 10.x.x.x network and the public network. You can make a Cisco PIX do this happily, so I know it can be done in theory. Any ideas?
I'm in a situation where a company is trying to migrate away from a public IP address block they've been mistakenly using for years, to a proper private IP address scheme. They wanted to use a Linux router to bridge between a 10.x.x.x network and their old network, so departments can be cut over one at a time. However, the 2.6.9 kernel we're using doesn't seem to want to forward packets between a private and a public network without using IP Masquerading or NAT.
We'd like it to act like it shouldn't, and just route packets between the 10.x.x.x network and the public network. You can make a Cisco PIX do this happily, so I know it can be done in theory. Any ideas?
