router config to work with VNC
Peter Coulter
peter "at" coulter.ndo.co.uk
Fri Mar 26 22:40:00 2004
Tom:
The ActionTec 1524R SU is a wireless broadband gateway (modem/router).
The Dlink 614+ is a wireless router.
This begs the quesiton why you need the D-link router at all? Unless there
is some other reason you haven't mentioned that you need the D-link for?
To connect to the internet via a DSL connection, and have a home LAN sharing
that connection, is fully within the scope of the ActionTec alone (more than
enough connectivity with 4 x LAN ports PLUS wireless).
In fact adding the D-link into the mix is just adding to your configuration
difficulties (connecting two NAT routers back-to-back, each DHCP servers,
each with wireless!!). For a start you've having to set up port-forwarding
in two places when it really isn't necessary.
I suggest using the ActionTec alone and see if you can get GoToMyVNC.com to
see Display 0 .. 9.
--------------------------------------------
Peter Coulter
--------------------------------------------
> -----Original Message-----
> From: Tom Knowlton [mailto:tom "at" buyersfund.com]
> Sent: Friday, March 26, 2004 8:43 PM
> To: peter "at" coulter.ndo.co.uk; vnc-list "at" realvnc.com
> Subject: RE: router config to work with VNC
>
>
> Peter:
>
> I'm grateful for your help.
>
> A little more on the modem and router:
>
> Both have 4 ethernet ports. DLink Router has a WAN port,
> which the ActionTec is plugging into right now (using one of
> the ethernet ports on the ActionTec).
>
> The ActionTec is a model 1524R SU. It is a Wireless-ready
> (not being utilized by me) DSL broadband modem.
>
> ActionTec Vendor Home Page:
> http://www.actiontec.com/
>
> ActionTec Model specific:
> http://www.actiontec.com/products/broadband/wireless_ready_dsl
> _gateway/wireless_ready_dsl_gateway_specifications.html
>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> DLink Wireless Router is a DI 614+. I need the DLink so I
> can transmit the Internet to our laptop, and daughter's
> computer upstairs.
>
> DLink router Vendor Home Page:
> http://www.dlink.com/
>
>
> DLink router Model specific:
> http://www.dlink.com/products/?pid=20
>
>
>
>
> =============================================
> =============================================
>
> To answer your other questions (best I can):
>
> Q: Is the modem a DHCP server?
> A: Yes. I turned this OFF once with disasterous consequences.
>
> In fact, I think DHCP is turned on for both the ActionTec
> modem and the DLink router. I think it is Dynamic DHCP
> assigned for both modem and router.
>
>
> IMPORTANT UPDATE on the DLink (LAN) subnet:
>
> I have changed the DLink router subnet over to 10.x.x.x. I
> did this last night.
>
>
> Q: I assume also that it is set to automatically acquire
> Default Gateway and DNS server information from the ISP
>
> A: Not sure. Seems right.
>
>
>
> <<<<<Looking forward to actually getting to the VNC bit!! ;-)>>>>>
>
> Me too!
>
>
> Right before I went to bed last night I ran the GoToMyVNC.com
> against my IP address (205.208.x.x) and Display 0 thru 9 were
> NOT OPEN. :(
>
>
>
> Thanks,
>
>
> Tom
>
>
>
>
>
> -----Original Message-----
> From: Peter Coulter [mailto:peter "at" coulter.ndo.co.uk]
> Sent: Friday, March 26, 2004 1:21 PM
> To: Tom Knowlton; vnc-list "at" realvnc.com
> Subject: RE: router config to work with VNC
>
>
> Tom,
>
> You'd need to say a bit more about the ActionTec modem before
> I could answer questions on it. Even the model name would
> allow a manual to be dragged up online. But your modem must
> be slightly different to mine because if I type my external
> (dynamic) IP address into IE it doesn't take me to the modem;
> the only way I can access the modem via IE is using 192.168.0.1.
>
> Also, when it comes to mind: Is the modem a DHCP server? The
> D-link router will be a DHCP server by default and you cannot
> have two DHCP servers on the same subnet or they will likely
> be issuing clashing IP addresses. So if both devices are DHCP
> servers the facility would have to be disabled in one or
> other of them. To me it makes more sense to have the router
> as the DHCP sever and thus deactivate the facility in the
> modem (if such a facility exists there).
>
> It's rarely enough just to quote an IP address; usually at
> least the sub-net mask but also the default gateway are
> necessary to get the whole picture (although in most
> small/home LANs the former can be guessed with almost
> complete certainty and the latter with a fair degree of
> certainty!) So when you say that you have moved the D-link
> over to the IP address 192.168.0.2 I assume you mean you've
> set the router IP address in the LAN-side set-up pages. I
> assume also that it is set to automatically acquire Default
> Gateway and DNS server information from the ISP; that will be
> how the D-link directs traffic that is not bound for its own
> sub-net out onto the Internet, I don't think it really cares
> too much about the fact it is going through the modem, it
> just dumps stuff out the default gateway as its only known
> route to the outside world.
>
> I must say there are things that get me excited ... but
> routers ain't one of 'em! :-) Looking forward to actually
> getting to the VNC bit!! ;-)
>
> Peter
>
>
> > -----Original Message-----
> > From: Tom Knowlton [mailto:tom "at" buyersfund.com]
> > Sent: 26 March 2004 03:54
> > To: coulter; vnc-list "at" realvnc.com
> > Subject: RE: router config to work with VNC
> >
> >
> > UPDATE:
> >
> > I moved my DLink router IP over to 192.168.0.2
> >
> > Now when I type 192.168.0.2 it takes me to the DLink Router
> config (as
> > expected)
> >
> > When I type in my static IP address (205.208.XXX.XXX) it takes me to
> > my ActionTec broadband modem config....is that right?
> >
> > Now, there is still another IP address, isn't there? The
> one that my
> > DLink is using to connect to my ActionTec modem.
> > That is the part I am not sure about.
> >
> > So I need an answer to that part, plus I still need to get VNC
> > working.
> >
> > But the good news is that for the FIRST TIME....I can get to the
> > firewall config for both my DLink Router and my ActionTec broadband
> > modem WITHOUT having to disconnect any cables. I'm so excited.
> >
> > -----Original Message-----
> > From: coulter [mailto:coulter "at" coulter.ndo.co.uk]
> > Sent: Thursday, March 25, 2004 6:36 AM
> > To: vnc-list "at" realvnc.com
> > Cc: Tom Knowlton
> > Subject: RE: router config to work with VNC
> >
> >
> > As noted by other posters your diagram is incomplete.
> >
> > However what if does tell me is that you have two devices -
> namely the
> > Actiontec modem and the D-link router - with the same IP address
> > namely 192.168.0.1 (you say it in words in some of the
> supporting text
> > but it is not shown in the diagrams).
> >
> > First you can't have two devices with the same IP address and not
> > expect problems. Plus your Dlink must be getting very
> confused -- it's
> > supposed to be a router, by definition a router routes!
> > Usually between different sub-nets!! :-)
> > But as it is seeing the same IP address 192.168.0.1 on each
> > of its port (both WAN-side and LAN-side) it's likely not a
> > happy bunny.
> >
> > For me the easiest way to solve this is to put the modem and the
> > router on different sub-nets as follows: leave the modem on
> > 192.168.0.1 (the 192.168.0.0/255.255.255.0 sub-net) and put
> the router
> > on a completely different sub-net. So that it is very clear which
> > is which make them very different, thus I suggest putting the
> > router on the 10.0.0.0 / 255.255.255.0 (although really
> > anything other than 192.168.0.x will do). The router being
> > the DHCP server then dishes out LAN IP address to this
> > revised sub-net. The very first consequence of this will be
> > that you can access both devices via IE using their now
> > different IP addresses without having to be disconnect the
> > devices every now and again! ;-)
> >
> > Once you get this difficulty between modem and router sorted you may
> > be able to progress with VNC issues. Set up port-forwarding on each
> > device now as appropriate.
> >
> > Good luck,
> > P
> >
> > > --__--__--
> > >
> > > Message: 14
> > > Subject: RE: router config to work with VNC
> > > Date: Wed, 24 Mar 2004 17:13:21 -0700
> > > From: "Tom Knowlton" <tom "at" buyersfund.com>
> > > To: "Scott C. Best" <sbest "at" best.com>, <vnc-list "at" realvnc.com>
> > >
> > > Does this diagram help any? (until I can get Kaboodle up
> > and running)
> > >
> > >
> > > http://www.knowltonfamily.com/config_port_forward.gif