On Fri, Dec 08, 2000 at 08:24:53AM -0600, Ken Hardy wrote:
> Do you know where I can find how to program to this feature of
> Linux?
It is easy. You have two modes:
- eighter you write a "normal" program which
is binding on a local socket (can even be by inetd) and then use ipchains to
redirect complete networks to your local application
ipchains -p tcp -D 0/0 80 -j REDIRECT 81
(this will redirect all traffic to ports 80 of any host to the local
application running on port 81.)
- or you use a program which is specifically binding to a foreign address
(this requires root and is only possible if transparent redirects are
enabled).
You may wynt to have a look at transproxy
BTW: if you want to get the remote address of the "catched/absorbed"
connection you will need to use a simple getsockname(2)
Greetings
Bernd
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