On 18 Jan 2002, Bret Hughes wrote:

> On Fri, 2002-01-18 at 14:50, David Talkington wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> > 
> > David Talkington wrote:
> > 
> > >Dave Wreski wrote:
> > >
> > >>> Now, however, the systems behind the firewall can't access the sites
> > >>> on the server...ie, workstation at 192.168.0.3 can't access any of the
> > >>> sites hosted on 192.168.0.1, because the DNS entries for those sites
> > >>> point them back outside the firewall...it would seem that, while the
> > >>> outside world can get through the firewall to get the sites, with no
> > >>> problem, the machines behind the firewall can't go outside the
> > >>> firewall and then back in.
> > >>
> > >>Sounds like you'll need to create a separate domain to refer to your web
> > >>server by the internal hosts, if I understand your problem correctly.
> > >
> > >Interesting puzzle.  That was my thought, too, Dave, but I'm having
> > >trouble seeing why there should be a routing problem as it is.  The
> > >hop will be all the way out (at least) to his ISP's router, but I'm
> > >not sure I see why this is causing a problem, except for the obvious
> > >performance hit.  The NAT setup will just cause the router to think
> > >that his client is trying to connect back to port 80 on itself, which 
> > >it should happily do.
> > 
> > Duh.  No, I'm loopy.  The packet never leaves the network, because his
> > gateway thinks it's a local destination.  I see now that the problem
> > is that the ruleset for forwarding back to the DNAT'ted server only
> > works for connections hitting the external interface.  What the OP
> > needs, then, is some iptables tweaking to properly forward requests
> > from the private net, and then it should work fine without DNS 
> > hassles.
> > 
> > Yes?  Or do I need still more coffee?
> 
> This is exactly what I was thinking.  But one can always use more
> coffee.  
> 
> Mike, Why don't you post your rules so we can look at them and David can
> fix them :)
> 
> I saw a reference recently that explained the path through these filters
> but can't remember where.

Ok...they're up at http://www.bubbanfriends.org/~mburger

I even tried adding FORWARD rules for the internal interface, to bounce 
requests to those IPs to the internal machines, but it didn't seem to fly.



_______________________________________________
Redhat-list mailing list
[EMAIL PROTECTED]
https://listman.redhat.com/mailman/listinfo/redhat-list

Reply via email to