[olug] DNS & NAT examples needed

[Curtis LaMasters]

PAT is actually the term to use here (port address translation).  So instead
of using a single IP with all ports NAT'd to an internal IP, you can NAT a
single port on your single external IP to a host on your LAN.  In the
information you've given you'll need UDP/53, TCP/80, TCP/443 and TCP/25
(DNS, HTTP, HTTPS, SMTP).

Curtis LaMasters
http://www.curtis-lamasters.com
http://www.builtnetworks.com


On Wed, Dec 31, 2008 at 2:02 PM, <webtrekker at cox.net> wrote:

> Hi Curtis,
> I will be hosting a couple of different domains (nchea.org, nchea.net,
> houseofswartz.*, and couple of other non-profits in 09), for web and mail
> (scalix or zimbra) for each domain.
> What I can't seem to get my head wrapped around is how to translate all of
> the services/servers back out through a single public IP.
>
> I hadn't heard of pfSense, so I am heading there now... thanks for the tip.
>
> Patrick
>
> ---- Curtis LaMasters <curtislamasters at gmail.com> wrote:
> > I may not fully understand what you want but I would replace the Linksys
> > with something that does load balancing for your hosts behind (pfSense
> comes
> > to mind), setup UDP/53 (DNS) to round robin between your two (I assume
> > you'll have two) DNS servers and setup host header based web access on
> > TCP/80.  What other services will you be offering?
> >
> > Curtis LaMasters
> > http://www.curtis-lamasters.com
> > http://www.builtnetworks.com
> >
> >
> > On Wed, Dec 31, 2008 at 12:07 PM, <webtrekker at cox.net> wrote:
> >
> > > Hi All,
> > > After several attempts of finding a vps service that I liked or could
> > > afford, I have taken the plunge and upgraded to Cox's business line and
> now
> > > have my very own IP (cheers all around...).
> > > Anyway, I now need to setup DNS to support the different web, mail
> servers
> > > for a couple of different domains.  I have done this in the past, but I
> had
> > > plenty of public IP addresses available to work with.  Now, I only have
> one
> > > and need to use NAT for all of the servers behind it.
> > > Can someone lend some guidance on how to set this up?  I have a XEN box
> > > that will be running most of the servers and a Linksys wireless router
> that
> > > is doing the NATing for those and the rest of the PCs in the house.
> > >
> > > Not sure if I should take out the Linksys (or move it down stream) and
> put
> > > up a Linux box w/multiple nics and run my first nameserver there. or
> just
> > > run bind as one of the virtual hosts.
> > >
> > > I apologize for the long winded request, but your help is greatly
> > > appreciated.
> > >
> > > Patrick
> > >
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