Re: Trying to assemble home LAN with 4 routers, need help with subnets!

Chuck <none@xxxxxxxxxxx> wrote in
news:hbjbe1te8l4ffm8qf1bs98dmheduf9k1t1@xxxxxxx:

> On Mon, 25 Jul 2005 23:20:14 -0600, "Chris Shearer Cooper"
> <chrisnews@xxxxxxx> wrote:
>
>>"Chuck" <none@xxxxxxxxxxx> wrote in message
>>news:jfebe1p7ob4sff1k3mi5romjlps5fo01cm@xxxxxxxxxx
>>> On Mon, 25 Jul 2005 22:13:07 -0600, "Chris Shearer Cooper"
>>> <chrisnews@xxxxxxx>
>>> wrote:
>>>
>>>>"Chuck" <none@xxxxxxxxxxx> wrote in message
>>>>news:u38be1l5gql7j4md1fpv321av94vid5s5r@xxxxxxxxxx
>>>>> On Mon, 25 Jul 2005 20:09:09 -0600, "Chris Shearer Cooper"
>>>>> <chrisnews@xxxxxxx>
>>>>> wrote:
>>>>>
>>>>>>First let me describe the situation ... first comes a DSL
>>>>>>router, then a router that does my VoIP, then a router that
>>>>>>does my firewall and VPN, then
>>>>>>a wireless router. What a pain.
>>>>>>
>>>>>>I've gotten pretty good at getting things to basically
>>>>>>function, but I don't
>>>>>>know enough to get things to work like I really want.
>>>>>>
>>>>>>For example - the wireless router plugs into one of the
>>>>>>ports on the firewall/VPN router. Right now, I've got the
>>>>>>firewall/VPN router set to a
>>>>>>subnet of 192.168.2.*, and the wireless router set to a
>>>>>>subnet of 192.168.3.*. I used to have the wireless router
>>>>>>set to "gateway" mode, which meant that my laptop (on the
>>>>>>wireless router) was able to use a printer on my main
>>>>>>computer (on the firewall/VPN router). However, some
>>>>>>of
>>>>>>the multi-player games my son and I like to play didn't
>>>>>>function properly
>>>>>>in
>>>>>>that mode, so I tried setting the wireless router to
>>>>>>"router" mode (it recommended that anyway) and it didn't
>>>>>>help the multi-player games, and now
>>>>>>the laptop can't share the printer.
>>>>>>
>>>>>>Do folks have recommendations about where I can go to learn
>>>>>>more about how
>>>>>>routers differ from gateways, how to get subnets working
>>>>>>properly, what Windows needs to have file/printer sharing
>>>>>>work, what multi-player games require of their network, that
>>>>>>sort of thing?
>>>>>>
>>>>>>Thanks!
>>>>>>Chris
>>>>>
>>>>> Chris,
>>>>>
>>>>> I'm not really clear how the "DSL router" and the VOIP
>>>>> router are setup. Do you
>>>>> mean that the 4 routers are connected in series?
>>>>> Internet <=> DSL router <=> VOIP router <=> firewall / VPN
>>>>> <=> wireless or is it more complicated?
>>>>>
>>>>> Is the only problem between the firewall and wireless
>>>>> routers? That's an
>>>>> easy
>>>>> one to fix. Use the wireless router as a WAP.
>>>>> <http://nitecruzr.blogspot.com/2005/06/file-sharing-on-lan-wi
>>>>> th-two-routers.html>
>>>>>
>>>>> If that's not it, please repost, and provide more detail as
>>>>> to what connects to
>>>>> what.
>>>
>>>>You are correct that currently, all 4 routers are connected in
>>>>series.
>>>>
>>>>I don't see any setting on the router for WAP (it's a LinkSys
>>>>WRT54GS) but it's got an "Operating Mode" I can switch between
>>>>Router and Gateway; I'm thinking that Gateway might be the
>>>>equivalent of WAP, it lets the laptop (on
>>>>the wireless router) see a shared drive on the desktop (on the
>>>>firewall/VPN
>>>>router).
>>>>
>>>>What's strange in this setup, is that the laptop can ping the
>>>>desktop but not vice-versa. I set up some static routing in
>>>>the VPN/Firewall router that directs 192.168.3.* via gateway
>>>>192.168.2.139 (which is the static IP of the wireless router
>>>>in the VPN/Firewall router's subnet) but that doesn't
>>>>help. What can I look into, to find out why that is?
>>>>
>>>>See if I can draw this with ASCII characters ...
>>>>
>>>>(Internet IP)
>>>>DSL modem
>>>>11.0.0.1
>>>> |
>>>>11.0.0.5
>>>>VoIP router
>>>>192.168.14.1
>>>> |
>>>>192.168.14.2
>>>>VPN/firewall router
>>>>192.168.2.1 --------- 192.168.2.160 desktop
>>>> |
>>>>192.168.2.139
>>>>Wireless router
>>>>192.168.3.1 ----------- 192.168.3.5 laptop
>>>
>>> Chris,
>>>
>>> OK, your layout is approximately what I was thinking. And the
>>> DSL device is a
>>> MODEM not a ROUTER. Thank you.
>>>
>>> The relationship between the laptop and the desktop pinging is
>>> not strange -
>>> it's what you should expect.
>>>
>>> Don't waste time looking for a WAP setting on the router, read
>>> the article which
>>> I listed previously. It was written for precisely this
>>> situation. The article
>>> explains how to use the wireless router as a WAP.
>
>>Aha! I read the article more closely and voila! I have one
>>nice little subnet instead of two. Very clever. Thanks for the
>>advice!
>>
>>Actually, the DSL modem is a Cisco 678 so it's got routing
>>capabilities. It was a real pain getting Remote Desktop working
>>into the desktop, I had to set up port forwarding on 3 different
>>routers ...
>>
>>So the only issue remaining, and maybe it's hopeless ... when we
>>play Galactic Battlegrounds, I have to host on the desktop; if
>>the laptop hosts, the desktop can't find the game. I suspect
>>it's related to the ping issue. It makes sense; the firewall/VPN
>>router doesn't know that the laptop exists on the far side of
>>the wireless router ... I was thinking about setting up some
>>port forwarding to get through the wireless router to the
>>laptop, but the only way I know to do port forwarding is to a
>>static IP, and I don't want to assign the laptop a static IP
>>because I unplug it and take it to work with me. Is there a way
>>to do port forwarding in this situation? Or is this what UPnP
>>forwarding was designed for?
>>
>>Thanks!
>>Chris
>
> Chris,
>
> Glad to help some. But maybe I'm not understanding what your
> problem is now.
>
> So you setup the wireless router as a WAP now? Is the desktop
> still having a problem locating the laptop? Even with
> everything on the same subnet?
>
> Port forwarding doesn't work with dynamic LANs. You're right,
> you would have to use a static address on the laptop. But why
> is this even a concern, if you have both computers on the same
> subnet?
>
> Will the DSL modem / router work in bridge mode? Any reason why
> you wouldn't want to make it into just a modem?
>

The OP could replace the 4 devices with one that is fit for
purpose, and eBay the rest, and avoid the unnecessary complexity.
.

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