Russell McMahon writes:

> As per recent messages, I have installed an Apache server on my home 
> LAN.
> This works well for others BUT I am unable to see the server "from the 
> outside" from within the LAN due to router action.
> 
> For incoming traffic I have set the router to direct port 80 to port 
> 80 on the PC which is running the server.
> 
> When I attempt to access the server "across the net" at
> 
>        www.russell.servepics.com
> 
> I instead am directed to the router's logon page - the same as I see 
> when accessing 192.168.1.1
> 
> I imagine that this happens because the router requests the 
> russell.servepics.com address, is passed my IP address by the DNS, and 
> recognises this as it's own address, and provides its own homepage. 
> (It's entirely likely that I've got this wrong :-) ).

What's going on here is that your router is doing network address
translation (NAT) The addresses on your inside network are
non-routable, and not visible from the outside world.  Many routers do
port forwarding to forward specific ports on the router to an internal
machine -- and you definitely seem to be on the right track here.  If
you've set up port forwarding but you still get the web page of the
router, something is definitely amiss.  Some routers need to be
rebooted when you make config changes like this.  It's also possible
that the router is passing the connection to your server, but it's
possible your web server may not be configured to handle such
redirections.  The default action of the router might be to display
the router's web page if port forwarding is enabled but the internal
machine does not respond to forwarded requests.  The thing to do here
is to check all of your apache log and error files to see if anything
at all is coming in when you hit the machine from the outside.

Also, remember, you can't route out and back again.  If you want to
test your server from the outside, you'll need to test it directly
from a machine that really is on the outside.

-p.
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