iptables -- trying to redirect, but doesn't work (and related guru question)

David Cary Hart Fedora at TQMcube.com
Mon May 2 17:17:43 UTC 2005


On Mon, 2005-05-02 at 12:35 -0400, John G. Norman wrote:
> Thanks!
> 
> (Still can't figure out why my rule isn't taking.)
> 
> On 5/2/05, David Cary Hart <Fedora at tqmcube.com> wrote:
> > On Mon, 2005-05-02 at 09:30 -0400, John G. Norman wrote:
> > 
> > > My related guru question is: How can I tell on a running system if the
> > > kernel was compiled with "fast switching" for the network? Apparently
> > > this has to be set to OFF for this kind of redirection to work.
> > >
> > 
> > Fast Switching is no longer a kernel option. Netfilter would be
> > completely bypassed - not just NAT/DNAT.

I experienced the same problem experimenting with zombiesmtp. I finally
gave up and redirected to a different machine:port which works
perfectly. You might want to post this query in the netfilter list.
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